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6.

The average age of a husband and his wife was 23 years at the time of their marriage. After five years they have a one-year old child. The average age of the family now is :

A) 19 years

B) 23 years

C) 28.5 years

D) 29.3 years

7.

Of the three numbers, the average of the first and the second is greater than the average of the second and the third by 15. What is the difference between the fire and the third of the three numbers ?

A) 15

B) 45

C) 60

E) None of these

8.

Of the three numbers, the first is twice the second and the second is twice the three. The average of the reciprocal of the numbers is  7/72. The numbers are :

A) 16, 8, 4

B) 20, 10, 5

C) 24, 12, 6

D) 36, 18, 9

9.

The average price of three items of furniture is Rs. 15000. If their prices are in the ratio 3:5:7, the price of the cheapest item is :

A) Rs. 9000

B) Rs. 15000

C) Rs. 18000

D) Rs. 21000

10.

In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs ?

A) 6.25

B) 6.5

C) 6.75

D) 7

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