At what rate of interest, does a sum of money becomes 27 times itself in three years compounded annually, what is rate of interest? a. 100% b. 250% c. 200% d. 150% e. 300% Sol: Let the principal amount be ‘P’ and rate of compound interest be ‘R’ then, 27P = P * (1 + […]

Rahul’s age four years ago is six times of Mohan’s age after 10 years and sum of Rahul, Mohan and Amit after two years is 124 years. If Amit is three years older than Rahul, then what is the Amit’s age after 9 years? a.            70 b.            50 c.             45 d.            65 e.            80 Sol:

2500 * 4 – ? * 3 =  (427 – 33) a)            70 b)            50 c)            80 d)            60 e)            90 Sol: 2500 * 4 – ? * 3 =  (427-33) 50 * 4 = ? * 3 +  (427-27) 200 – 400 = ? * 3 ? * 3 = 200 – 20 ?

The average number of sold items from Shop A and Shop B together is 260 and the average number of unsold items from Shop A and Shop B is 290 and the ratio of sold items from Shop A and Shop B is 27:25. Find the total number of items in Shop B, if the

15.992 – 6.662 – ?= 31.89% of 249.99 a)            171 b)            145 c)            127 d)            193 e)            138 Sol: 15.992 – 6.662 – ?= 31.89% of 249.99 162 – 72 – ? = 32 * 250/100 256 – 49 – ? = 80 207 – ? = 80 ? = 127

P invests Rs.5000 in Scheme A in Simple interest at 15% per annum for 3 years and Rs.4000 at 20% for 2 years in Compound interest in Scheme B and invests the interest obtained from Scheme A and B in Scheme C at 10% for 4 years in Simple interest. Find the interest obtained from

3, 12, 40, ?, 381, 1150 a)            120 b)            80 c)            90 d)            125 e)            132 Sol: 3 * 3 + 3 = 12 12 * 3 + 4 = 40 40 * 3 + 5 = 125 125 * 3 + 6 = 381 381 * 3 + 7 = 1150

A, B and C together can complete a work in 12 days and A and B together can complete the same work in 24 days and the ratio of the efficiency of B and C is 2:5. A, B and C started the work and worked for 6 days. After 6 days, A and B

8, 17, 31, 50, 74, ? a)            111 b)            105 c)            107 d)            103 e)            114 Sol: 8 + 9 = 17 17 + 14 = 31 31 + 19 = 50 50 + 24 = 74 74 + 29 = 103

If the ratio of the length of the rectangle and the breadth of the rectangle is 5:6 and the perimeter of the rectangle is 66 m and the side of the square is 5 m less than the length of the rectangle, then find the area of the square. a)            100 m2 b)            121 m2