Q. 42 A person deposited Rs 400 for 2 years, Rs 550 for 4 years and Rs 1200 for 6 years. He received a total simple interest of Rs 1020. The rate of interest per annum is

Q. 43 Rs 800 becomes Rs 956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4%, what amount will Rs 800 become in 3 years?

Q. 45 A person borrows Rs 5000 for 2 years at 4% per annum simple interest. He immediately lends it to another person at 6(1/4) % per annum simple interest for 2 years. His gain in the transaction is

Q. 48 A sum of money at a certain rate per annum of simple interest doubles in 5 years and at a different rate becomes three times in 12 years. The lower rate of interest per annum is

Q. 50 At the rate of simple interest per annum, the interest on a certain sum of money for 10 years will be (2/5) th part of the amount, then the rate of simple interest is

Q. 51 The present worth of a bill due 7 months hence is Rs 1200 and if the bill were due at the end of 2(1/2) years its present worth would be Rs 1016. The rate per cent is

Q. 53 If x, y, z are three sums of money such that y is the simple interest on x and z is the simple interest on y for the same time and at the same rate of interest, then we have

Q. 54 Ram deposited a certain sum of money in a company at 12% per annum simple interest for 4 years and deposited equal amount in fixed deposit in a bank for 5 years at 15% per annum simple interest. The difference in the interest from two sources is Rs 1350, then the sum deposited in each case is

Q. 55 The simple interest on a sum of money is (1/9) of the principal and the number of years is equal to rate per cent per annum. The rate per annum is

Q. 58 With a given rate of simple interest, the ratio of principal and amount for a certain period of time is 4 : 5. After 3 years, with the same rate of interest, the ratio of the principal and amount becomes 5 : 7. The rate of interest is

Q. 59 The rate of simple interest per annum of bank being decreased from 5% to 3(1/2)% the annual income of a person from interest was less by Rs 105. The sum deposited at the bank was

Q. 60 A sum of money was lent at simple interest at a certain rate for 3 years. Had it been lent at 2.5% per annum higher rate, it would have fetched Rs 540 more. The money lent was