# Compound Interest 1/5

25. The compound interest on a certain sum of money for 2 years at 10% per annum is Rs.420. The simple interest on the same sum at the same rate and for the same time will be :
a. Rs.350
b. Rs.375
c. Rs.380
d. Rs.400

26. The difference between the compound interest and simple interest on a certain sum at 5% per annum for 2 years is Rs.1.50. The sum is :
a. Rs.600
b. Rs.500
c. Rs.400
d. Rs.300

27. A sum of money placed at C.I doubles itself in 5 years. It will amount to eight times itself in :
a. 15 years
b. 20 years
c. 12 years
d. 10 years

28. The simple interest on a certain sum for 2 years at 10% per annum is Rs.90. The corresponding compound interest is :
a. Rs.99
b. Rs.95.60
c. Rs.94.50
d. Rs.108

29. What is the principal amount which earns Rs.132 as compound interest for the second year at 10% per annum ?
a. Rs.1000
b. Rs.1200
c. Rs.1320
d. None of these

30. A sum amounts to Rs.1352 in 2 years at 4% compound interest. The sum is :
a. Rs.1300
b. Rs.1250
c. Rs.1260
d. Rs.1200