Question

If 3 men van do a piece of work in 1 day... hom many man can do it in 3 days.?​

Answer 1

HOLA MATE

ANSWER:-

Use unitary method

3 men complete job in 1 day

3 men complete 1/10 job in 1 day

12 women complete job in 15 days

=> 6 women complete job in 30 days

6 women complete 1/30 job in 1 day

5 men & 6 women complete :

1/10 + 1/30 = 2/15 job in 1 day

They will take 15/2 = 7.5 days to completed the job.

Another approach

50M = 180W

M = 18/5 W

5 men & 6 women mean :

18W + 6W = 24W

If work = 12 x 15 = 180 units, number of days required is 180/24 = 7.5 days.

Answer 2

Answer is in the attachment.