Quantitative Aptitude
SIMPLE INTEREST
1. Find the Simple Interest on Rs. 5000 at 27/4 % per annum for the period from 5th February 2006 to 19th April 2006.
Solution
NOTE : 2006 is not a Leap Year. The day on which money is deposited is not counted. Day on which money is withdrawn is counted.
Time = (23 + 31 + 19) = 73 Days = 73/365 year.
P = Rs. 5000. R = 27/4 %.
Answer is 67.50
2. A sum of Rs 1000 amounts to Rs 1500 in 4 years at simple interest. If the interest rate is increased by 4%, it would amount to how much?
Answer is Rs 660.
3. Shiva borrowed some money at the rate of 8% per annum for the first 3 years, at the rate of 12% per annum for the next four years, and at the rate of 15% per annum for the period beyond seven years. If he pays a total interest of Rs 12500 at the end of Twelve years, how much money did he borrow?
4. A certain sum of money amounts to Rs 1500 in two years and Rs 2001 in (7/2) years. Find the Sum and Rate of interest.
SI for (7/2 – 2) = (3/2) = (2001 – 1500) = 501
Answer R = 40.14%
5. The SI on a certain sum of Money for 6 years at 12% annum is Rs 75 less than the SI on a same sum for 8 years at 10% per annum. Find the sum.
NUMBER SERIES
6. 4, 10, 40, 190, 940, _____, 23440
7. 2, 9, 30, ______, 436, 2195, 13182
8. 3, 5, 7, _____, 13, 17, 19, 23
9. 6, 16, 36, 76, 156, 316, ______
10. 123, 277, 459, 669, 907, ______
Series Pattern
6.
4 + (6 * 1) = 10
10 + (6 * 5) = 40
40 + (30 * 5) = 190
190 + (150 * 5) = 940
7.
(2 + 7) * 1 = 9
(9 + 6) * 2 = 30
(30 + 5) * 3 = 105
8. Simple Prime Number Series.
9.
6 * 2 + 4 = 16
16 * 2 + 4 = 36
36 * 2 + 4 = 76
10.
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