Q1. The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is
(a) 5
(b) 10
(c) 20
(d) 30
(e) none of these
Q2. In a mixture of 60 litres, the ratio of milk to water is 2 : 1. If the ratio of milk to water is to be 1 : 2, then amount of water (in litres) to be further added is
(a) 20
(b) 40
(c) 60
(d) 80
(e) none of these
Q3. How many litres of a 30% alcohol solution should be added to 40 litres of a 60% alcohol solution to prepare a 50% solution ?
(a) 30
(b) 20
(c) 24
(d) 32
(e) none of these
Q4. Samant bought a microwave oven and paid 10% less than the original price. He sold it with 30% profit on the price he had paid. What percentage of profit did Samant earn on the original price?
(a) 17%
(b) 20%
(c) 27%
(d) 32%
(e) 40%
Q5. What will be the difference in simple and compound interest on Rs. 2000 after three years at the rate of 10 percent per annum?
(a) Rs. 160
(b) Rs. 42
(c) Rs. 62
(d) Rs. 20
(e) none of these
Directions (6-10): What should come in place of question mark (?) in the following questions. Find the exact value.
(a) 72
(b) 67
(c) 62
(d) 77
(e) None of these
(a) 15
(b) 17
(c) 19
(d) 21
(e) None of these
(a) 85
(b) 75
(c) 125
(d) 50
(e) None of these
(a) 182
(b) 728
(c) 364
(d) 218
(e) None of these
Directions (11-15): What should come in place of question mark (?) in the following number series?
Q11. 2, 8, 26, ?, 242
(a) 78
(b) 72
(c) 82
(d) 84
(e) None of these
Q12. 3, 4, 12, ?, 196
(a) 45
(b) 40
(c) 41
(d) 49
(e) None of these
Q13. 5, 3, 6, ?, 64.75
(a) 15
(b)15.5
(c) 17.5
(d) 17.25
(e) None of these
Q14. 384, 381, 372, 345, 264, ?
(a) 23
(b) 25
(c) 43
(d) 24
(e) None of these
Q15. 282, 286, 302, ?, 402
(a) 366
(b) 318
(c) 326
(d) 338
(e) None of these
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