How much time will it take for ₹ 450 to yield an simple interest of ₹ 81 at 4.5% per annum?
5 years
4 years
6 years
3 years
Let the time taken be t years. Then,
P = ₹ 450, R = 4.5%, SI = ₹ 81
SI = PTR100
81=450×4.5×t100
⇒t=100×81450×4.5 years=4 years
How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum calculated at simple interest?