raman mixed 54 kg of butter at rs . 150 per kg with 36 kg butter at the rate of rs . 125 per kg . at what price per kg should he sell the mixture to make a profit of 40 % in the transaction ?
"explanation : cp per kg of mixture = [ 54 ( 150 ) + 36 ( 125 ) ] / ( 54 + 36 ) = rs . 140 sp = cp [ ( 100 + profit % ) / 100 ] = 140 * [ ( 100 + 40 ) / 100 ] = rs . 196 . answer : c"
add(divide(add(multiply(54, 150), multiply(36, 125)), add(36, 54)), multiply(divide(add(multiply(54, 150), multiply(36, 125)), add(36, 54)), divide(40, const_100)))