Question

10 boys clear a piece of land for 21 days how many days wilp it take 7 boys to ckear the same land if it work at thesame rang

Answer 1

Step-by-step explanation:

10 boys clear a piece of land= 21

day one boy clear a piece of land= 21×10

then

7 boys create the same line= (21×10)/7

= 30 day