John can build a fence in 2 days; Bill can build the same fence in 5 days. If john and Bill worked together, how long would it take them to build the fence?
2006-09-26 13:28:03 · 34 answers · asked by ♥ 3 in Entertainment & Music ➔ Jokes & Riddles
I am 100% sure and I would bet my life on it! The answer is 1 and 3/7 days.
The equation for the problem is
(1/5 + 1/2) times x = 1
2006-09-26 13:33:58 · answer #1 · answered by miajj16 4 · 1⤊ 0⤋
no it has to be less than 2 days it never said that trhey both do half so if bill can do 1/5 of the fence in a day and john can do 1/2 of the fence in a day it would not be over 2 days or less than 1
LCD 5/10+2/10=7/10 which leaves 3/10 for the next day so technically a day and a half
2006-09-26 13:36:43 · answer #2 · answered by chrissolo88 1 · 0⤊ 0⤋
John can build 5 in 10 days. Bill can build 2 in 10 days. That is a total of 7 in 10 days. 10/7=1.something
2006-09-26 13:31:36 · answer #3 · answered by drupe_1999 1 · 0⤊ 0⤋
Together they can build the fence in 1 day, 10 hours, and 17 minutes. If there are 28800 pieces, and John does 10 a minute, and Bill does 4 a minute. That means John does 14400 pieces a day, and BIll does 5760 a day for a total of 20160 a day. If this is true (which it is), John does 600 a hour and Bill does 240 a hour. So that is 10 hours meaning 8400 pieces. So far we have 28560 out of 28800 pieces. Now we go to minutes. 17 minutes is 238 pieces. John gets 170 and Bill is 68. If you add all these together you get 28798 pieces. And that is how you figure it out.
2006-09-28 09:39:15 · answer #4 · answered by Eggdrop 2 · 0⤊ 0⤋
I saw this one on here before. Some people added 5+2 to equall a week's work. But, that is not true, really. If you take 7 and divided it by 2 people (John and Bill), You would have about 3 days and about 5 hours on the 4th day. If they work a little bit fast enough, 3 days is the medium, that is about as much time it would take for both of them.
2006-09-26 13:33:35 · answer #5 · answered by uchaboo 6 · 1⤊ 0⤋
It would take 1 and 3/4 of a day. You need to take the average time it takes them to build a fence (which is 3.5) and then you need to divide it by 2 since they'll both be working on the fence together, which comes out to be 1.75.
2006-09-26 13:34:05 · answer #6 · answered by Writer of Truth 4 · 0⤊ 0⤋
Both of them working on the same fence ? About 1 and 1/2 days. Good Luck ! :)
2006-09-26 13:29:49 · answer #7 · answered by tysavage2001 6 · 0⤊ 0⤋
2 1/2 days
2006-09-26 13:29:54 · answer #8 · answered by happy1here♥ 5 · 0⤊ 0⤋
3 days
2006-09-26 13:29:45 · answer #9 · answered by beardedredhead7 4 · 0⤊ 0⤋
3 1/2 days?
2006-09-26 13:29:12 · answer #10 · answered by HoTtIe_WiTh_a_BoDy 2 · 0⤊ 0⤋