Multiple Choice QuestionsThe difference between simple interest and compound interest at the same rate for rupees 5,000 for two years is rupees 98. The rate of interest is:
10%
14%
12%
12%
Gold and copper are as heavy as water by 19 and 9 times respectively. The ratio in which these two metals be mixed so that the mixture is 17 times as heavy as water is:
2:3
2:3
4:1
4:1
There are two urns. One contains two white balls and four red balls, the other contains three white and nine red balls. All balls are of the same shape and size. From each urn, one ball is drawn. What is the probability of getting both the balls of the same colour?
1/24
7/12
1/12
1/12
A man rows to a place 45 k.ms distant and back in 12 hours. He realises that he can row 5 k.ms downstream in the same time as 3 k.ms against the stream. The velocity of
the stream is:
2 k.ms/hr
1.5 k.ms/hr
1 k.m/hr
1 k.m/hr
In an office, 1/3 of the workers are Men, ½ of the men are married and 1/3 of the married men have children. If ¾ of the women are married and 2/3 of the 2/3 of the married women have children, then the part of workers without children are:
17/36
4/9
5/18
5/18
Taps ‘A’ and ‘B’ can fill a tank in 37 ½ minutes and 45 minutes respectively. Both taps are opened and after some time tap ‘B’ is turned off. The tank is filled completely in exactly 30 minutes, if tap ‘B’ is turned off after:
9 minutes
10 minutes
15 minutes
15 minutes
A boat travels upstream from A to B and back from B to A in 5 hours. The speed of the boat in still water is 8 km/hour and the speed of the current is 4 km/hour. Then, the distance from A to B is:
9 kms.
10 kms.
12 kms
12 kms
Age of father 10 years ago was three times the age of his son. After 10 years, father’s age is twice that of his son. The ratio of their present ages is:
7:3
9:5
7:4
7:4
A clock was set correct at 12 O’ clock. It loses 10 minutes per hour. What will be the angle between the hour and minute hands of the clock after one hour?
75º
85º
105º
105º
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