Quiz on Math Set 247

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Quiz on Math Set 247 :

Question 1 :

Average monthly income of a family of 4 earning members was Rs. 735. One of the earning members died and therefore, the average income came down to Rs 650. The income of the deceased was?
A. Rs. 692.80
B. Rs. 820
C. Rs. 990
D. Rs. 1385

Correct Ans: Option C

Question 2 :

The average age of 24 students in a class is 10. If the teacher’s age is included, the average increase by one . The age of the teacher is ?
A. 25 year
B. 30 year
C. 35 year
D. 40 year

Correct Ans: Option C

Question 3 :

The average expenditure of a man for the first five month is Rs. 120 and for the next seven months it is Rs . 130. if he saves Rs 299 in that year, his monthly average income is ?
A. Rs. 140
B. Rs. 150
C. Rs. 160
D. Rs. 170

Correct Ans: Option B

Question 4 :

The average salary of 20 workers in an office id Rs. 1900 per month . If the manger’s salary is added , the average salary become Rs. 2000 p.m what is the manager’s annual salary ?
A. Rs. 24000
B. Rs. 25200
C. Rs. 45600
D. None of these

Correct Ans: Option D

Question 5 :

The average of 6 observation is 12. A new 7th observation is included and the new average is decrease by 1 , the seventh observation is ?
A. 1
B. 3
C. 5
D. 6

Correct Ans: Option C

Question 6 :

Out of four number, the average of first three is 15 and that of the last three is 16, if the last number is 19, the first is ?
A. 15
B. 16
C. 18
D. 19

Correct Ans: Option B

Question 7 :

The average temperature of the first three days is 27° C and that of the next three is 29° C . If the average of the whole week is 28.5° C, the temperature of the last day of the week is ?
A. 10.5° C
B. 21° C
C. 31.5° C
D. 42° C

Correct Ans: Option C

Question 8 :

A ship sails out to a mark at the rate of 15 kmph. and sails back at the rate of 10 kmph. The average rate of sailing is ?
A. 5 km/hr
B. 12 km/hr
C. 12.5 km/hr
D. 25 km/hr

Correct Ans: Option B

Question 9 :

The average consumption of petrol for a car for seven months is 110 litres and for next five months it is 86 litres. The average monthly consumption is ?
A. 96 litres
B. 98 litres
C. 100 litres
D. 102 litres

Correct Ans: Option C

Question 10 :

A batsman has a certain average runs for 11 innings . In the 12th innings he made a score of 90 runs and thereby decrease his average by 5 . His average after 12th innings is ?
A. 127
B. 145
C. 150
D. 217

Correct Ans: Option B

Quiz Summary


Here the correct answers of every question in this quiz.

Q.1 [C],     Q.2 [C],     Q.3 [B],     Q.4 [D],     Q.5 [C],     Q.6 [B],     Q.7 [C],     Q.8 [B],     Q.9 [C],     Q.10 [B],    


Total Questions: 10
Your score:
Subject: Math
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