Question

Abdu and Raghavan take up a contract to till a piece of farm land. Abdu tills of the land a day and Raghavan tills of the land a day. What part of the land do they together till in a day?

Answer 1

Part of the land tilled by Abdu in a day =

Part of the land tilled by Raghavan in a day =

Part of land they together till in a day =

First, we change these fractions to fractions with the same denominator.

Thus, the denominator we need should be a multiple of 7 and 5 = 7 × 5 = 35.

and

∴

∴ Part of land they together till in a day =