please provide details on how you got the answer. thank you
2007-01-18 23:15:31 · 8 answers · asked by ROHIT G 1 in Education & Reference ➔ Trivia
If 24 men take 12 days to complete a task and 36 children take 18 days to complete the same task how long will it take 4 men and 9 children to complete the same task.
2007-01-18 23:51:47 · update #1
you can set the job equal to some arbitrary number
24 men X 12 days = 100 widgets
so
24 men = 8.333333 widgets per day
and
1 man = .347222 per day
36 children X 18 = 100 widgets
so
36 children = 5.55555 widgets per day
and
1 child = .15432 widgets per day
So 4 men X .347222 = 1.38888 widgets per day
and 9 children X .15432 = 1.38888 widgets per day
so each day 2.77777 widgets are produced
100 / 2.7777 = 36days
2007-01-19 13:48:14 · answer #1 · answered by wade b 2 · 0⤊ 0⤋
12 is 1/2 of 24 making it that 1 man can do 1/2 day
18 is 1/2 of 36 making it that 1 child can do 1/2 day
9 +4 = 13.....and if 13 people can each work 1/2 day thats 13 divided by 2.....6 1/2 days :)
2007-01-19 00:00:21 · answer #2 · answered by kittenlova 3 · 0⤊ 0⤋
288 man labor days or 648 child labor days so 1 man=2.25 child
so 4x2.25days+9 days=648
18 days=648 number of days=36
2007-01-19 00:23:11 · answer #3 · answered by meg 7 · 0⤊ 0⤋
6.5 days....i think.
24 men = 12 days....so..... 1 man = half a day.
36 children = 18 days ..... so...... 1 child = half a day
4 men = 4 x half days = 2 days
9 children = 9 x half days = 4.5 days
2+4.5 = 6.5
hope i got it right.
2007-01-18 23:21:20 · answer #4 · answered by Anonymous · 2⤊ 0⤋
Did your teacher give a complete or complet question when this was assigned as homework?
2007-01-18 23:42:45 · answer #5 · answered by mrjomorisin 4 · 0⤊ 1⤋
6.5 days
2007-01-19 05:20:12 · answer #6 · answered by scott w 1 · 0⤊ 1⤋
complete what be more specific.
2007-01-18 23:22:28 · answer #7 · answered by player4shore734 1 · 0⤊ 2⤋
26................ummmmmmmmm
2007-01-19 03:24:23 · answer #8 · answered by Asha N 1 · 0⤊ 0⤋