average

Average Questions Set – 4

Q1. The average marks of 50 students in a class is 72. The average marks of boys and girls in that subject are 70 and 75 respectively. The number of boys in the class is:
(a) 30
(b) 20
(c) 35
(d) 25

Q2. The average age of 14 girls and their teacher’s is 15. If teacher’s age is excluded the average reduces by 1. What is the teacher’s age?
(a) 35 years
(b) 32 years
(c) 30 years
(d) 29 years

Q3. There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of the remaining 20 students is 13.1 years. The average age (in years) of the students of the whole class is:
(a) 12.5 years
(b) 12.7 years
(c) 12.8 years
(d) 12.9 years

Q4. The average score of a class of boys and girls in an examination is A. The ratio of boys and girls in the class is 3 : 1. If the average score of the boys is A + 1, the average score of the girls is:
(a) A + 1
(b) A – 1
(c) A + 3
(d) A – 3

Answers to the quiz and More questions are attached in the Sehpaathi Test Application below

Sehpaathi Test Application: CHALLENGE YOURSELF

Test: Bnk_Quant_Average_Set4

Q5. Five years ago, the average age of P and Q was 25. The average age of P, Q and R today is 25. Age of R after 5 years will be
(a) 15 years
(b) 20 years
(c) 40 years
(d) 35 years

ANSWERS:

1 – A

2 – D

3 – D

4 – D

5 – B

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