In how many years will a sum of Rs 800 at 10% per annum compounded semi-annually becomes Rs 926.10

2 1/2

1 1/2

2 1/3

1 1/3

Correct Answer : B

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