Question

Agar A kisi kaam ko 20 din me karta hai aur B Usi kaam ko 30 din me karta hai toh Dono Milkar usi kaam ko kitne din me samapt Karenge

Answer 1

both can do in 12 days

Answer 2

A = 30
B = 20

30 - 20 = 10

Wo dono milkar 10 din me kam ko samapt kar lenge

i.e They will finish the work in 10 days.