


50.
Simple interest on a certain sum at a certain annual rate of interest is 1/9 of the sum. If the numbers representing rate percent and time in years be equal, then the rate of interest is:
51.
Simple interest on a certain amount is 9/16 of the principal. If the numbers representing the rate of interest in percent and time in years be equal, then time, for which the principal is lent out, is: [R.R.B. 2003]
52.
A lends Rs. 2500 to B and a certain sum to C at the same time at 7% p.a. simple interest. If after 4 years, A altogether receives Rs. 1120 as interest from B and C, then the sum lent to C is: [S.S.C. 2003]
53.
Two equal sums of money were lent at simple interest at 11% p.a. for 3 1/2 years and 4 1/2 years respectively. If the difference in interests for two period was Rs. 412.50, then each sum is:
54.
If the simple interest on a certain sum for 15 months at 7 1/2% per annum exceeds the simple interest on the same sum for 8 months at 12 1/2% per annum by Rs. 32.50, then the sum (in Rs.) is:
55.
A man invests a certain sum of money at 6% p.a. simple interest and another sum at 7% p.a. simple interest. His income from interest after 2 years was Rs. 354. Onefourth of the first sum is equal to onefifth of the second sum. The total sum invested was:
56.
A borrowed some money from B at 12% p.a. S.I. for 3 years. He then added some more money to the borrowed sum and lent it to C for the same period at 14% p.a. rate of interest. If A gains Rs. 93.90 in the whole transaction, how much money did he add from his side?
