Practice Test Discussion

The average score of a cricketer in two matches is 27 and in three other matches is 32. Then find the average score in all the five matches?

None of these

Explanation

According to the question

$n_{1} = 2, n_{2} = 3, a_{1} = 27, a_{2} = 32$

We know the formula,

Weighted average(Aw) $= \frac{n_{1} a_{1} + n_{2} a_{2}}{n_{1} + n_{2}}$

Average in 5 matches $= \frac{2 \times 27 + 3 \times 32}{2 + 3} = \frac{54 + 96}{5}$ =30

Hence, Option B is correct.

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