Average Aptitude Mcq Pdf Model Questions & Answers, Practice Test for ssc constables capfs nia ssf ar tier 1 2024

Question :1

Dhoni scored 8000 runs in a certain number of innings. In the next five innings, he was out of form and hence, could make only 85 runs, as a result his average reduced by 1 run. How many innings did he play in total?

Answer: (d)

8000/n = a

8085/n + 5 = a-1

$n^2$ + 90n - 40000 = 0

n = 160

$n^2$ + 5 = 165

Question :2

The average of four consecutive even numbers P, Q, R and S respectively (in increasing order) is 51. What is the product of P and R?

Answer: (e)

x + x + 2 + x + 4 + x + 6

= 4 × 51

= 4x + 12 = 204

= 4x = 204 - 12 = 192

x = $192/4$ = 48 = P

∴ R = 48 + 4 = 52

∴ P × R = 48 × 52 = 2496

Question :3

The average age of a class of 20 students is 12 years. Out of which one student whose age is 10 year left the class and two new boys entered the class. The average of the class remains the same and the difference between the ages of new boys is 4 year. What will be the age of younger one .

Answer: (d)

240 - 10 + a + b = 21 × 12

a + b =22, a - b =4. So, b= 9

Question :4

A cricketer had an average number of runs as 32 after playing 10-innings. If he wants to make his average run rate increased by 4, then how much runs will he have to take in his next inning?

Answer: (b)

Average after 10 innings = 32,

so after 11 inning = 32 + 4 = 36

So required runs = (36 × 11) - (32 × 10)

= 396 - 320

= 76

Question :5

The average age of the family of five members is 24. If the present age of youngest member is 8 years, then what was the average age of the family at the time of the birth of the youngest member?

Answer: (d)

Total age of 5 member family = 24 × 5 = 120 years

Total age 8 years ago

= 120 - 5 × 8 = 80 years

∴ Required average age

= $80/5$ = 16 years

ssc constables capfs nia ssf ar tier 1 2024 IMPORTANT QUESTION AND ANSWERS
Average ssc constables capfs nia ssf ar tier 1 2024 question answer with explanation PDF

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