Hello friends,This is quiz from SBI PO mock test (Quants section ) with explanation.Numbering of questions is as per numbering in mock test 4.
21)Nitish purchased a TV set for Rs.15,750 after getting 10% discount on the labelled price. He spent Rs.100 on transportation and Rs.850 on installation. At what price should he sell it so that the profit earned would be 15%?
1 : Rs.24045
2 : Rs.23205
3 : Rs.22325
4 : Rs.19205
5 : None of these
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4 : Rs.19205
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22)The compound interest on a certain sum of money at 12% per annum for two years is more than the simple interest on the same sum at the same rate of interest for two years by Rs.8640. Find the sum.
1 : Rs.3 lakh
2 : Rs.12 lakh
3 : Rs.6 lakh
4 : Rs.1.5 lakh
5 : None of these
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3 : Rs.6 lakh
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23)The total age of a large family of 15 members is 420 years. The average age of five elder members is 45 years. The average age of five younger members is nine years. What is the average age of the remaining five members?
1 : 20 years
2 : 25 years
3 : 30 years
4 : 35 years
5 : None of these
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3 : 30 years 
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24)In an exam, pass percentages for juniors and seniors are 30% and 35% respectively. Maximum marks for both juniors and seniors are the same. A junior scored 467 marks and failed by 133 marks. Find the pass mark for seniors?
1 : 630
2 : 700
3 : 665
4 : 735
5 : None of these
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2 : 700 
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25)Work done by P in one day is double the work done by Q in one day and work done by Q in one day is thrice the work done by R in one day. If P, Q and R together can complete the work in 30 days then in how many days P alone can do the work?
1 : 55 days
2 : 45 days
3 : 35 days
4 : 40 days
5 : 50 days
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5 : 50 days
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26)Three men A, B, C run a race around a circular stadium of length 1200 m at speeds of 3 m/sec, 4 m/sec and 5 m/sec respectively. Find the time taken for all the three to meet again at the starting point for the first time.
1 : 600 sec
2 : 2400 sec
3 : 1800 sec
4 : 3600 sec
5 : 1200 sec
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5 : 1200 sec 
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27)Eswar started a business by investing Rs.25,000. After 6 months, Giri joined him with Rs.37,500. After another 6 months, Hari joined them with Rs.62,500. At the end of 2 years, the total profit made must be distributed among Eswar, Giri and Hari in the ratio ______.
1 : 4 : 5 : 8
2 : 4 : 5 : 6
3 : 8 : 9 : 12
4 : 8 : 9 : 10
5 : None of these
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4 : 8 : 9 : 10
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28)The sum of nine consecutive odd numbers of set P is 513. What is the sum of a different set of three consecutive numbers whose greatest number is 13 more than the mean of set P?
1 : 207
2 : 210
3 : 213
4 : 177
5 : None of these
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1 : 207
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29)The ratio of Anil’s age 6 years ago and Bala’s age 8 years ago was 3 : 4. Find the ratio of their present ages.
1 : 4 : 5
2 : 1 : 2
3 : 3 : 4
4 : Cannot be determined
5 : None of these
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3 : 3 : 4
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30)If the digits of a two-digit number are interchanged, then the number formed is greater than the original number by 36. If the difference between the digits is 4, then what is the original number?
1 : 15
2 : 26
3 : 37
4 : Cannot be determined
5 : None of these
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4 : Cannot be determined 
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