Question

Preeti can do a piece of work in 10 days, neha can do it in 6 days and sia can do it in 15 days separately. In how many days can they do the work together

Answer 1

Answer:

10,15,6 LCM= 30,

efficiency of p= 30÷10= 3, N= 2, S=5,

3+2+5=10,

30÷10=3days