Question

A sum of Rs. 450 amounts to Rs. 495 in 2 years. In what time will the Sum of Rs. 820 amount to Rs. 943 at the same rate?

• A. 3 years
• B. 2 years
• C. 4 years
• D. 6 years

Answer 1

The correct option is A 3 years

P = Rs. 450; A = Rs. 495; T = 2 years; I = A - P = 495 - 450 = 45
$I=\frac{PTR}{100}$

$R=\frac{100\times I}{PT}=\frac{100\times 45}{450\times 2}=5\%$

Now take
P = Rs. 820; A = Rs. 943; R = 5%; T = ?I = A - P = 943 - 820 = Rs. 123.

$I=\frac{PTR}{100}$

$T=\frac{100\times 1}{PR}=\frac{100\times 123}{820\times 5}=3years$