Question

A vendor sells 2 kinds of sugar. the per kg rate of the dearer sugar is 25% more than the cheaper one. in what ratio should the cheaper and dearer be mixed and sold at the per kg rate of dearer sugar to gain 10% per kg

Answer 1

A shopkeeper mixes 35 kg of wheat which cost him rs.15 per kg with 25 kg of wheat which cost him rs.20 per kg.he sells the mixture at rs.22 per kg.his gain is