How long will it take for a sum of Rs. 450 to earn Rs. 81 in simple interest at a rate of 4.5 percent per annum?
A. 3.5 years
B. 4 years
C. 4.5 years
D. 5 years
Answer:B
How long will it take for a sum of Rs. 450 to earn Rs. 81 in simple interest at a rate of 4.5 percent per annum?
A. 3.5 years B. 4 years C. 4.5 years D. 5 years
Explanation: time = (100 x 81/450 x 4.5) years= four years