Jane takes 8 min to wash the car. Mike can wash the same car in 12 min. How long will it take if the two of them work together?
2007-12-09 12:07:47 · 14 answers · asked by Sellie 2 in Entertainment & Music ➔ Jokes & Riddles
5 minutes
2007-12-09 12:16:07 · answer #1 · answered by Will S 6 · 0⤊ 0⤋
Hello,
Total time Jane and Mike will take is 8 + 12 = 20;
When they work together they will take::
Total time divided by total number of people.
i.e. 20 / 2 = 10
Jane & Mike will take 10 minutes to wash the car.
2007-12-09 20:19:00 · answer #2 · answered by A Human 6 · 0⤊ 0⤋
one would assume it is the average of the two times, however if jane can do it in 8 minutes alone, it MUST be faster than 8 minutes with a 2nd person. so, with the time usage formula i=4.32 * x/y*3.89 however one must figure in the wet t-shirt that Jane has on and mike's erection... so it would take 47 minutes give or take 30 minutes...
x=5.72 minutes
2007-12-09 20:25:48 · answer #3 · answered by charlton_g_w 4 · 3⤊ 0⤋
twenty minutes, because jane washes the car again after mike gets done!
2007-12-09 20:26:08 · answer #4 · answered by book writer 6 · 0⤊ 0⤋
4.8 minutes
To show you how this works:
Let X= the time it takes to wash the car together
Jane can wash 1/8th of the car in one minute
Mike can wash 1/12th of the car in one minute
Together 1/8+1/12=5/24th of the car in one minute
so (5/24)X=1
5X=25
X= 24/5
X=4.8 or 4minutes and 48 seconds
2007-12-09 20:14:43 · answer #5 · answered by rdrnnr1972 5 · 2⤊ 0⤋
4 mins & 48 seconds
2007-12-09 20:18:30 · answer #6 · answered by Arica 3 · 1⤊ 0⤋
Ten Minutes.
2007-12-09 20:23:54 · answer #7 · answered by Whistler R 5 · 0⤊ 0⤋
5 minutes !!
2007-12-09 20:30:10 · answer #8 · answered by Adios 7 · 0⤊ 0⤋
8 min.?
2007-12-09 20:58:18 · answer #9 · answered by Anonymous · 0⤊ 0⤋
6 minutes and thats a guess lol
2007-12-09 21:01:24 · answer #10 · answered by Julie H 2 · 0⤊ 0⤋