Question 90

A sum fetched a total simple interest of Rs. 8100 at the rate of 6% per year in 9 years. What is the sum?

Solution

Let the sum = $$Rs. 100x$$

Rate = 6% under simple interest and time = 9 years

=> Simple interest = $$\frac{P \times R \times T}{100}$$

=> $$\frac{100x \times 6 \times 9}{100}=8100$$

=> $$54x=8100$$

=> $$x=\frac{8100}{54} = 150$$

$$\therefore$$ Sum = $$100 \times 150 = Rs$$ $$15,000$$

=> Ans - (A)

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