Question

(1) If 7 kg of sugar costs 140, find the cost of 10 kg of sugar.
use unitary method​

Answer 1

1 kg of sugar= x

7 kg of sugar= 140

1 kg= 140\7

      = 20

cost of 1 kg of sugar is 20.

so, cost of 10 kg of sugar is 20*10= 200