Question

1. 12 men or 15 women can finish a work in
10 days. How many days will 7 men and
10 women take to finish the same work
together?
UNV 2016
(2) 10
(3) 9
(4) 8
(1) 12
with solution ​

Answer 1

Answer:

12 men can do the job in 10 days. That means one man can do 1/(12*10) or 1/120 of the job per day.

15 women can do the job in 10 days. So one woman can do 1/(15*10) or 1/150 of the job per day.

7 men and 10 women will do 7/120 + 10/150 of the job per day. 7/120=35/600 and 10/150=40/600. So 35/600 + 40/600 or 75/600 or 1/8 of the work will be done each day.

It will take 8 days for the team to finish the job.

Step-by-step explanation:

(4)8

Answer 2

Answer:

since, 12 males =15 females

4males =5 female

10 female =8 males

now,

according to the question

work done by 12 males = 10 days

work done by 1 males =120 days

so, work done by (7 + 8) males

120/7+8=120/15=8 Days.