Question
Someone puts Rs. 18,000 in a scheme offering simple
interest at ‘x%’ annually and receives Rs. 22,500 after 2.5 years. If he had instead invested Rs. 15,000 at the same rate for 3 years, what interest would he have earned?Solution
Total interest for 2.5 years = 22500 - 18000 = Rs. 4,500 ATQ; 4500 = (18000 × x × 2.5) ÷ 100 ⇒ x = 10 So, required interest = (15000 × 10 × 3) ÷ 100 = Rs. 4,500
More Simple and compound interest Questions
- Find the wrong number in the given number series.
1, 2, 6, 24, 120, 600 Find the wrong number in the given number series.
32, 48, 72, 108, 162, 245
Find the wrong number in the given number series.
1800, 300, 60, 15, 5, 1.5
- Find the wrong number in the given number series.
16, 32, 64, 112, 176, 264 17, 33, 69, 133, 233, 370
2400,3600,5400,7200,12150
1, 2, 8, 48, 386, 3840
1 Â Â Â Â Â Â 3 Â Â Â Â Â Â 7 Â Â Â Â Â Â Â 15 Â Â Â Â Â Â Â 33
...Find the wrong number, in the given number series,
70, 56, 42, 30, 20, 12
1582, 1616, 1658, 1708, 1756, 1812
