The average weight of 16 boys in a class is 50.25 kgs and that of the remaining 8 boys is 45.15 kgs. Find the… · ABC26GN1573

Subject: General Aptitude · Chapter: Average

The average weight of 16 boys in a class is 50.25 kgs and that of the remaining 8 boys is 45.15 kgs. Find the average weight of all the boys in the class.

(a)47.55 kgs

(b)48 kgs

(c)48.55 kgs

(d)49.25 kgs

Answer

Answer (as printed): C

Explanation

$$\begin{aligned} \text { Required average } & =\left(\frac{50.25 \times 16+45.15 \times 8}{16+8}\right) \\ & =\left(\frac{804+361.20}{24}\right)=\frac{1165.20}{24}=48.55 . \end{aligned}$$

Explanation as extracted from the printed page; notation may be imperfect.

Study loop for Average

1. Practise the PYQsPrevious-year questions, with answers

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