Question
The interest received by investing Rs. 2500 for 2 years
at compound interest of 20% p.a., compounded annually, was re-invested for 3 years at simple interest of 25% p.a. Find the simple interest received.Solution
Compound Interest received = 2500 × {1 + (20/100)}2 – 2500 = 2500 × (12/10)2 – 2500 = 3600 – 2500 = Rs. 1100 Simple interest received = 1100 × 3 × 25 ÷ 100 = Rs. 825
3Â Â Â Â Â Â Â Â Â Â Â Â Â Â 25Â Â Â Â Â Â Â Â Â Â Â 173Â Â Â Â Â Â Â Â Â 1041Â Â Â Â Â Â Â 5201Â Â Â Â Â Â Â 20809
10       a �...
24 25 46 ? 572 2885
...2,0, 9, 20, ‘?’, 714
7Â Â Â Â Â Â 15Â Â Â Â Â Â Â 31Â Â Â Â Â Â 63Â Â Â Â Â Â 127Â Â Â Â Â Â ?
...148, ‘?’ , 15 4 , 17 8 , 23 8 , 35 8 , 56 8
6 6 3 6.5 12 33
...32, 65 , 196, 785, ? , 23557
157, 159, 189, 319, ‘?’, 1 407 , 2749 Â
800    544    416    352    ?     304
18Â Â Â Â Â Â Â Â Â Â 434Â Â Â Â Â Â Â Â 642Â Â Â Â Â Â Â Â 746Â Â Â Â Â Â Â Â 798Â Â Â Â Â Â Â Â ?
...
