Question

a work can do 15 females in 10 days respectively 15 boys can do in 20 day then find 10 femal and 15 boys complet work?

Answer 1

1 female's work in 1 day = 15×10=150 = 1/150
1 male's work in 1 day = 15 ×20=300 = 1/300

(10 females can do work in 150÷10=15
15 males can do work in 300÷15 = 20)


( I am not able to understand that you are asking boths work together or differently so I used both ways)

10 female and 15 males together work =

10/150 +15/300= 1/15+1/20.
we will take LCM= 60 so answer will

(4+3)/60= 7/60= 8.571 approximately