The simple interest on a certain sum of money for 2 years at 12% per annum is ` 40 less than the simple 2 1 interest on the same sum for 3 years at 10% per annum. Find the sum. 2 x × 10 × 7 x × 12 × 5
Answer
Answer (as printed):
Explanation
Let the sum be ` x. Then, − = 40 100 × 2 100 × 2 7 x 3x ⇔ − = 40 ⇔ x = (40 × 20) = 800. 20 10 Hence, the sum is ` 800. 644 QUANTITATIVE APTITUDE
Explanation as extracted from the printed page; notation may be imperfect.