Average & Problems on Ages Quiz | Quantitative Aptitude MCQ Practice for IBPS AFO 2026

1

A cricketer scored 100 runs in his 10th innings and this increased his average by 8 runs. What was the average at the end of 10th innings?

Solution & Explanation 9x+100=10(x+8) => 9x+100=10x+80 => x=20. New avg=20+8=28.

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2

Shivam’s age is 4/5 of Avinash’s age while age of Avinash after 5 years will be equal to twice the present age of Pradeep. If the sum of ages of all three is 37 years. Find the present age (in years) of Shivam.

Solution & Explanation S=4/5A, P=(A+5)/2. S+A+P=37 => 0.8A + A + 0.5A + 2.5 = 37 => 2.3A = 34.5 => A=15. S=12.

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3

Average of four numbers is 45.5. Third number is 250% more than the second number and fourth number is 41 less than third number. If first number is 15, then find the sum of second and fourth number.

Solution & Explanation Let the four numbers be A, B, C, and D. Given A = 15 and their average is 45.5. So, A + B + C + D = 45.5 * 4 = 182. Substituting A=15, we get 15 + B + C + D = 182, so B + C + D = 167. The third number (C) is 250% more than the second number (B), meaning C = B + 2.5B = 3.5B. The fourth number (D) is 41 less than the third number (C), so D = C - 41. Substitute C = 3.5B into D = C - 41, so D = 3.5B - 41. Now substitute C and D in terms of B into the sum equation: B + 3.5B + (3.5B - 41) = 167. This simplifies to 8B - 41 = 167, so 8B = 208, which gives B = 26. Then C = 3.5 * 26 = 91, and D = 91 - 41 = 50. The required sum of the second and fourth numbers is B + D = 26 + 50 = 76.

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4

A club has 15 men and 25 women. The average age of men is 10 years and the average age of women is 12 year. What is the average age of the whole club?

Solution & Explanation Total age = (15×10) + (25×12) = 150 + 300 = 450. Avg = 450 ÷ 40 = 11.25.

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5

The average weight of ten students is 40 kg. If lightest and heaviest are excluded, average of remaining 8 is 41 kg. If heaviest weighs 50 kg, find lightest.

Solution & Explanation Total = 400. Remaining 8 = 41 × 8 = 328. Sum of two = 400 - 328 = 72. Lightest = 72 - 50 = 22.

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Average & Problems on Ages Quiz for IBPS AFO 2026

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