Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
Jayco RV Owners Forum
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-05-2015, 07:19 AM   #1
Senior Member
 
Join Date: Jul 2010
Location: Oklahoma panhandle
Posts: 562
Math problem

I will never pass grade school math.

You need to do a task for 9 minutes; however you only have two hourglasses to utilize. You have a 4 minute hourglass and a 7 minute hourglass. How do you determine with only 9 minutes have passed.

Any thoughts?

Shorty
Shorty Cox is offline   Reply With Quote
Old 01-05-2015, 07:42 AM   #2
Senior Member
 
Join Date: Aug 2013
Location: NC
Posts: 974
Start both, flip the 4 min when finished and also flip the 7 min which is now become a 5 min timer when flipped over. Done.
__________________
No man has a good enough memory to be a successful liar. Abraham Lincoln

2016 36FBTS Pinnacle
2016 F350, 6.7, 4x4, DRW, long bed
B & W Companion 5th wheel Hitch
eldermike is offline   Reply With Quote
Old 01-05-2015, 07:51 AM   #3
Senior Member
 
Join Date: Mar 2014
Location: Beautiful West-Central Florida
Posts: 166
Start both timers:
When 4 min timer runs out (4 min total time)turn it over:
When 7 min timer runs out (7 min total time now) turn it over:
When 4 min timer again runs out (8 min total time now) turn 7 min timer over:
When 7 min timer now runs out you have 9 minutes.

All of these are predicated on the assumption that the flow in the timers is constant from start to finish.
__________________
Mike
2012 Greyhawk 31DS
2012 Ford Edge Toad


If I had anything better to do I would be doing it :)
snowbird47 is offline   Reply With Quote
Old 01-05-2015, 07:12 PM   #4
Senior Member
 
troutslayer's Avatar
 
Join Date: Dec 2012
Location: NW AR (God's Country)
Posts: 2,051
My head hurts
__________________
Skip

2012 Eagle Super Lite HT 26.5RKS
2005 GMC 2500 SLT HD D/A
troutslayer is offline   Reply With Quote
Old 01-05-2015, 07:42 PM   #5
Site Team
 
WVDusty's Avatar
 
Join Date: Feb 2014
Location: Charleston
Posts: 1,714
Quote:
Originally Posted by troutslayer View Post
My head hurts

^^^what he said LOL ^^^
__________________
Can't find what you're looking on JOF? Try:Jayco Owners Forum Custom Google Search

TV 2005 Ram 3500 CC LB SRW Cummins POWER
2014 Jayco Jayflight 32BHDS Prodigy P3 brake controller.Reese dual cam 1400/14000
WVDusty is offline   Reply With Quote
Old 01-05-2015, 08:33 PM   #6
Senior Member
 
Locky66's Avatar
 
Join Date: Mar 2012
Location: West Michigan
Posts: 631
Check your watch
__________________
If the trailers a rockin, dont bother a knockin, just come on in and make yourself a drink. We wont be long.
Locky66 is offline   Reply With Quote
Old 01-05-2015, 08:39 PM   #7
Senior Member
 
Join Date: Jan 2011
Location: Arizona City
Posts: 10,135
Quote:
Originally Posted by Locky66 View Post
Check your watch
x2
__________________
2018 Jayco Jayfeather 27 RL, 2002 Ford excursion, v-10, 3:73 gears 4x4 mine. 2020 Buick Encore Hers, Retired Air Force, now Retired.
Parcany is offline   Reply With Quote
Old 01-05-2015, 08:41 PM   #8
Senior Member
 
Join Date: Oct 2013
Location: Tuscola
Posts: 212
Open ice chest. Pop the top. Consume. 9 minutes on a decent day.
__________________
2014 Eagle 34.5 BHTS FW
2018 Ram 3500 Laramie 4/4 CC
Cummins 68rfe 3.42 gears
Tgallagher is offline   Reply With Quote
Old 01-05-2015, 10:01 PM   #9
Senior Member
 
Join Date: Feb 2012
Posts: 968
You have the wrong timepieces to solve the problem.
By definition, an HOURGLASS measures in units of an Hour.
Calling something a 7 minute hourglass is like calling something else a trombone Chevy.

Snowbird 47 did a great job.
I just don't understand eldermike's math.
dewey02 is offline   Reply With Quote
Old 01-06-2015, 04:20 AM   #10
Member
 
Join Date: Dec 2014
Location: johnson city
Posts: 31
I would just skip that task!
linkbelt is offline   Reply With Quote
Old 01-06-2015, 07:15 AM   #11
Senior Member
 
Join Date: Jul 2010
Location: Oklahoma panhandle
Posts: 562
I have to agree with Snowbird. That is what I figgered out. I do like Tgallagher's timer much better.
Regarding the term "hourglass" I've often wondered if the sand in an hourglass was supposed to take one hour to fall.

Speaking of terms for items. I have two sticks of wood at my house. Both or marked in "one inch" increments. I call the one that has 36 one inch increments on it a "Yardstick", but the one that has 48 one inch increments on it, I don't know what to call it.

Shorty
Shorty Cox is offline   Reply With Quote
Old 01-06-2015, 09:40 AM   #12
Senior Member
 
Join Date: Feb 2012
Posts: 968
I have a couple of hour glasses. And yes, they are fairly accurate in measuring an hour's time.
I don't know what the name for a 4 foot measuring stick is.
Yardstick is 3 feet
Meter stick is 39.3 inches
Cubit is 1.5 feet
Fathom is 6 feet.
dewey02 is offline   Reply With Quote
Old 01-06-2015, 09:48 AM   #13
Senior Member
 
Hitch Pin's Avatar
 
Join Date: Sep 2011
Location: Southern Ohio
Posts: 463
Quote:
Originally Posted by Shorty Cox View Post
Speaking of terms for items. I have two sticks of wood at my house. Both or marked in "one inch" increments. I call the one that has 36 one inch increments on it a "Yardstick", but the one that has 48 one inch increments on it, I don't know what to call it.

Shorty
The 48" one would called a yard and a third stich.
__________________
2015 Jay Flight 23 RB
2014 Silverado LT 1500 with a 5.3 V8 Ecotec3
Hitch Pin is offline   Reply With Quote
Old 01-06-2015, 06:11 PM   #14
Senior Member
 
Camping Couple's Avatar
 
Join Date: Aug 2012
Location: Kalamazoo
Posts: 769
Geeze! My head just blew up.
__________________
2019 Jayco 26BHX Eagle HTX Fifth Wheel
2018 Chevrolet Silverado Double Cab 2500HD 4X4 6.0L 4.10 axle
Reese 16K Round Tube Slider Hitch
HD Trailering Package with Integrated Brake Controller

Camping Couple is offline   Reply With Quote
Old 01-06-2015, 08:45 PM   #15
Senior Member
 
Join Date: Jan 2011
Location: Arizona City
Posts: 10,135
I think that if somebody here has a grandkid that is in 2 or 3 grade than ask them. They will know the answer.
__________________
2018 Jayco Jayfeather 27 RL, 2002 Ford excursion, v-10, 3:73 gears 4x4 mine. 2020 Buick Encore Hers, Retired Air Force, now Retired.
Parcany is offline   Reply With Quote
Old 01-07-2015, 08:16 PM   #16
Senior Member
 
Locky66's Avatar
 
Join Date: Mar 2012
Location: West Michigan
Posts: 631
Next time you go to a hardware store ask them if they have a yard stick. When they show you one ask if they have one shorter. The look on their face is priceless.
__________________
If the trailers a rockin, dont bother a knockin, just come on in and make yourself a drink. We wont be long.
Locky66 is offline   Reply With Quote
Old 01-07-2015, 08:21 PM   #17
Senior Member
 
herewego's Avatar
 
Join Date: Oct 2014
Location: Decatur
Posts: 2,799
What he said !
__________________
Roy&Joyce
Decatur Al.
Jayco 2022 27RB WhiteHawk
Jayco 330RSTS Gone
Jayco G2 bunkhouse Gone
herewego is offline   Reply With Quote
Old 01-07-2015, 08:56 PM   #18
Senior Member
 
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
Anything worth doing can wait till tomorrow when there's more time and can be done well.
__________________
Cheers,
T_

2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks
RedHorse1 is offline   Reply With Quote
Old 01-07-2015, 11:54 PM   #19
Senior Member
 
Join Date: Nov 2014
Posts: 113
Quote:
Originally Posted by Shorty Cox View Post
I have to agree with Snowbird. That is what I figgered out. I do like Tgallagher's timer much better.
Regarding the term "hourglass" I've often wondered if the sand in an hourglass was supposed to take one hour to fall.

Speaking of terms for items. I have two sticks of wood at my house. Both or marked in "one inch" increments. I call the one that has 36 one inch increments on it a "Yardstick", but the one that has 48 one inch increments on it, I don't know what to call it.

Shorty
My 48 inch "stick" is a level. If yours doesn't have a bubble glass in it, then it's just a 4 foot measuring stick.
Mach1tosh is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Jayco, Inc. or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 09:47 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.