Question

7 men or 15 women or 6 boys can do a work in 25 days. In how many days 4 men and 8 women and 10 boys can do the work together?

Answer 1

Answer:

23 days

Step-by-step explanation:

7 men = 25 days

1 man = 25/7 = 3.571 days

15 women = 25 days

1 woman = 25/15 = 1.666 days

6 boys = 25 days

1 boy = 25/6 = 4.166 days

4 men = 4×3.571 = 14.284

8 women = 8×1.666 = 13.328

10 boys = 10×4.166 = 41.666

average = (14.284+13.328+41.666)/3

=69/3

=23