8 men and 2 boys can finish a work in 9 days.A child takes double the time to do a work than a man .In how many days 12 men can complete double the work??????
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1
♦
We have provided with,
2 child = 1 man
2 c = 1 m
♦
In 1st case,
8 m + 2 c = 9 days
8 m + 1 m = 9 days (bcoz 2 c = 1 m)
9 m = 9 days
1 m = 81 days _____ (1)
then,
12 men = 81/12 days
12 m = 81/12×2 days (Double work)
= 13.5 days
That means,
Double of work will be completed by 12 men in 13 and half days.
PLZ MARK IT AS BRAINLIEST ANSWER AND DROP A ♥
We have provided with,
2 child = 1 man
2 c = 1 m
♦
In 1st case,
8 m + 2 c = 9 days
8 m + 1 m = 9 days (bcoz 2 c = 1 m)
9 m = 9 days
1 m = 81 days _____ (1)
then,
12 men = 81/12 days
12 m = 81/12×2 days (Double work)
= 13.5 days
That means,
Double of work will be completed by 12 men in 13 and half days.
PLZ MARK IT AS BRAINLIEST ANSWER AND DROP A ♥
goutham34:
but the given answer is 21 days
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