12 men or 15 women can do a piece of work in 21 days find the number of days to complete the same work by 6 men and 10 women​

18 days required to complete same work by 6 men and 10 women.

Given: 12 men or 15 women can complete work in 21 days
To find: Days it takes to complete same work by 6 men and 10 women

Solution:
12 men = 15 women ⇒ 1 man
Men = women
Men =
15 women can finish the work by 21 days
6 men = women
6 men =
6 men and 10 women = =
women can finish the work= = 18 days.

Hope I helped have a good day