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AFCAT Model Paper 3

Question : 35 of 100

Marks: +1, -0

Solution:

Given:

Incorrect average weight of 20 boys = 65 kg

Formula used:

Average weight = Sum of the weights/Number of persons

Correct average = (Sum of the weights - Wrong Entry + Correct Entry)/ Number of persons

Calculation:

Correct average weight

= \frac{20 \times 65 - 76 + 66}{20}

\Rightarrow \frac{1290}{20}

⇒ 64.5 kg

∴ The required result = 64.5 kg

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