If the simple interest on the sum of Rs. A at 5% per annum for 3 years is thrice the simple interest on Rs. B at 7% per annum for four years. Find the ratio of A and B.
Answer & explanation
Correct answer: option 4
\(\frac{A × 5 × 3}{100}\) = 3(\(\frac{B × 7 × 4}{100}\))
A × 5 = B × 7 × 4
A : B = 28 : 5