Subject

Elementary Mathematics

Class

CLAT Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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11.

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.

9 minutes

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12.

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

34 Views

13.

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

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14.

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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15.

A trader sells rice at a profit of 20% and uses weights which are 10% less than the correct weight. The total gain earned by him is:

  • 33 1/3%

  • 22 2/9%

  • 30%

  • 30%

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16.

The average weight of three men ‘X’, ‘Y’ and ‘Z’ is 75 kgs. Another man ‘A’ joins the group and the average weight now becomes 80 kgs. If another person ‘B’ whose weight is 5 kgs more than ‘A’ replaces ‘X’, then the average weight of ‘Y’, ‘Z’, ‘A’ and B’ will be 85 kgs. What is the weight of ‘X’?  

  • 80 kgs.

  • 84 kgs.

  • 82 kgs.

  • 82 kgs.

39 Views

17.

‘A’ and ‘B’ complete a work in 12 days, ‘B’ and ‘C’ in 8 days and ‘C’ and ‘A’ in 16 days. ‘A’ left after working for 3 days. In how many days more will ‘B’ and ‘C’ finish the remaining work?

  • 6

  • 3 ¾

  • 7 ¾

  • 7 ¾

34 Views

18.

A vessel contains a mixture of milk and water in the ratio of 5:3 respectively. How much of the mixture must be siphoned off and replaced with water, so that the mixture may be half milk and half water?

  • 1/3

  • 1/4

  • 1/7

  • 1/7

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19.

A can do a piece of work in 8 days and B alone can do the same work in 10 days. A and B agreed to do the work together for Rs. 720. With the help of C, they finished the work in 4 days. How much C is to be paid?

  • Rs. 80

  • Rs. 82

  • Rs. 72

  • Rs. 72

30 Views

20.

The Banker’s discount on a sum of money for 18 months is Rs. 600 and the true discount on the same sum for 3 years is Rs. 750/-. The rate percentage is:

  • 10%

  • 20%

  • 12%

  • 12%

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