Quantitative Aptitude For IBPS RRB Prelim

1)A and B can complete a work in 60 and 90 days, respectvily They started the work together. After 10 days, B fell ill and therefore A and C completed the remaining work in the next 10 days. In how many days can C alone do the work?

e)None of these

2)Three solutions having milk and water in the ratio 2, : 3, 3 : 1and 4 : 5 respectively, were mixed in the ratio 2 : 3 : 4. Find the ratio of milk to water in the resultant mixture.
a)1000 : 900
b)869 : 751
c)800 : 650
d)600 :700
e)None of these

3)A student took five papers in an examination, where the full marks were the same for each paper. His marks in these papers were in the proportion of 6 : 7 : 8 : 9 : 10 In all papers together, the candidate obtained 60% of the total marks. Then the number ofpapers in which he got more than 50% marks is

4)The SI for 10 years is Rs. 6000. The CI for 2 years is Rs. 1400. Find the rate % and the principal.
a)33.37% Rs 2000

b)35.38%, Rs 1600

c)39. 40%, Rs 1500

d)33.33%, Rs 1800

e)None of these

5)A mother’s age is three times more than her son’s age. After 8 years, her age would be two and half times here son’s age. After another 8 years, how many times would her age be of her son’s age?

a)2 times

b)2.75 times

c)2.5 times

d)3 times

e)None of these

6) Average of the first three innings of Dhoni is 70. If runs of the fourth inning are added to the total of the first three, the new average becomes 64. In the fifth inning. he scores 2 runs less than he scored in the fourth inning so that the average of the last 4 innings now becomes 58. Determine his score in the first inning:

a) 60
b) 66

7) A table and a chair costs Rs.200 and Rs.140, respectiveiy. If the price of the table and that of the chair is increased by 20% and 30%, respectively, the price of 1 dozen tables and 2 dozens chairs is:
a) Rs.7248
b) Rs.7136
c) Rs.7434
d) None of these

8) The cost of manufacturing ofa tape recorder is Rs. 1,500. The manufacturer fixes the marked price 20% above the cost of manufacture. If the manufacturer wants to gain 8%, what is the rate of discount that can be allowed? .

a) 20%
b) 15%
c) 11%
d) 10%

9) Tap X can fill the tank completely in 4 hours, while tap Y can empty it in 8 hours. By mistake, the person forgot to close tap Y. As a result, both the taps remained open. Atter 4 hours, the person realised the mistake and immediately closed tap Y. In how much time (in hours) from now would the tank get
a) 4
b) 2
c) 6
d) 8
10) A, B and C enter-into a partnership with capital contributions of Rs.25,000. Rs. 30,000 and Rs.15,000, respectively. A is the working partner and he gets 30% of the profit for managing the business. The balance profit is distributed in proportion to the capital investment. At the year-end, A gets Rs 200 more than B and C together. Find the total profit.
a) Rs2500. b) Rs.2000. C) Rs.2200 d) Rs.2400

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