Q.11 Out of 24 girls, 6 are 1 m 15 cm in height, 8 are 1 m 5 cm and the rest 1 m 11 cm. What is the average height of the girls?
(A) 1 m 10 cm
(B) 1 m 15 cm
(C) 1 m 20 cm
(D) None of these
The correct answer is option (A)
Q.12 The average attendance of a college for the first three days of a week is 325, and for first four days it is 320. How many were present on the fourth day?
(A) 300
(B) 315
(C) 350
(D) 305
The correct answer is option (D)
Q.13 The mean temperature from the 9th to the 16th of January, both days inclusive, was 11.6 degree Celsius and from the 10th to 17th was 12.2 degree Celsius. The temperature on the 9th was 10.8 degree Celsius. What was it on the 17th ?
(A) 15.6 degree
(B) 16.6 degree
(C) 11.6 degree
(D) None of the these
The correct answer is option (A)
Q.14 Five men agree with a sixth men to subscribe a sum of money for a chit fund. The first five are to subscribe Rs. 15 each and sixth Rs 5 less than the average of all the six. The sixth man subscribe….
(A) Rs 9
(B) Rs 10
(C) Rs 9.50
(D) Rs 10.50
The correct answer is option (C)
Q.15 The average age of 30 boys in a class is 15.2 years. If 15 more boys join the class, the average of the whole class is reduced by half a year. The average age of the new comers is……
(A) 13 year
(B) 13.7 year
(C) 12.3 year
(D) 12.7 year
The correct answer is option (B)
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