Math Quantitative Aptitude
Math Quantitative Aptitude
11. 3040 is divided into two parts, one of which is 8/11 of the other.The smaller part is—
- 1280
- 640
- 1580
- 1760
12. The difference of the greatest and the least among the fractions 6/7, 7/8, 8/9, 9/10 is —
- 3/70
- 1/56
- 1/40
- 1/72
13. A and B together complete a job in 16 days, while B and C together finish the job in 24 days. If A is thrice as efficient as C, in how many days wi1l all of them working together complete the job?
- 96/7
- 48/7
- 24/3
- 48/5
14. At the time of marriage a man was 6 years older than his wife but 12 years after the marriage 6/5 times the age of his wife. What were their ages in year at the time of marriage?
- 24, 18
- 26, 20
- 27, 21
- 21, 15
15. Renu, Minu and Sonu are three cousins, Renu and Minu are of the same age and sum of the ages of three cousins’ is five times the age of Sonu. Three years ago Renu’s age was thrice the age of Sonu. What will be Sonu’s age after four years?
- 8 years
- 10 years
- 7 years
- 12 years
16. If a, b, c, be any 3 consecutive integers, then log (1 + ac) equals:
- log (2b)
- 1og (b/2)
- 2 log b
- 1/2 log b
17. A father deposits a total sum of Rs. 50,000 at 5% simple interest per annum in the names of his two sons in such a way that at the age of 18 years both of them get equal amount. If their present ages be 12 years and 14 years respectively, what is the present sum in the name of the younger son?
- Rs. 22,000
- Rs. 23,350
- Rs. 24,000
- Rs. 23,800
18. Standard deviation of 1, 4, 5, 7 and 8 is 2.45. If 9 is added to each term, what is the new standard deviation?
- 2.45
- 5.45
- 11.45
- 5.62
20. Two taps A and B can fill a cistern in 28 minutes and 42 minutes respectively. Third tap C can empty it in 42 minutes. If all the three taps are open, the time taken to fill the cistern is
- 12 minutes
- 28 minutes
- 16.8 minutes
- 42 minutes