Question

Of the two varieties of rice available,. Variety a is bought at rs.32 per kg. And variety b at rs.80 per kg. Two varieties of rice are mixed together in the respective ratio of 8 : 5 and the mixture is sold at rs.72 per kg. What per cent of profit approximately the seller receives?

Answer 1

mutiply then divide by 2

and

8/5 x 72