A reduction of 20% in the price of sugar enables a purchaser to obtain 2 ½ kg more for Rs 160. Find the original price per kg of sugar

Rs 12

Rs 15

Rs 16

Rs 18

Correct Answer : C

Successive discounts of 20% and 15% are equivalent to a single discount of

80% of p = 40% of Q and Q = X % P . Then the value of x is

Fresh grapes contain 90% water by weight while dried grapes contain 20% water by weight. What is the weight of dry grapes available from 20 kg of fresh grapes