Multiple choice

It is given that average age of M, N, O and P is 12.5 years and the sum of ages of M, N and O is 32 years. Find the age of P.

  1. 12 years

  2. 18 years

  3. 20 years

  4. 22 years

  5. 24 years
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B Correct answer
Explanation

Sum of M, N, O, P = 12.5 * 4 = 50. Sum of M, N, O = 32. P = 50 - 32 = 18.

AI explanation

Multiply the average age of the four people by 4 to find the total sum of their ages, which is 12.5 times 4, giving 50. The ages of M, N and O add up to 32. Subtract 32 from 50 to determine the age of P. The age of P is 18 years.

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