RRB Group D 2-Nov-2014 Shift 1 Solved Paper

Question : 22 of 100

Marks: +1, -0

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

38.55 kg
48 kg
48.55 kg
None of these

Validate

Solution:

\;\text " Total weight of all the "\; 24 \;\text " boys in "\;

\;\text " the class "\;=(16 × 50.25)+(8 × 45.15)

=1165.2 {kg}

\;\text " Average weight "\;=\;{1165.2}/{24}

\;\; =48.55 {kg}

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