Question

Weight of solid body in air
S.No. Observed weight W' (g wt) Corrected weight W = W' + (= e) g wt
Mean value of W (g wt)
1.
2.
3.​

Answer 1

Explanation:

Correct weight=observed weight+(-ve).

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Answer 2

Explanation:

So,x+x+52=1260

==>2x+52=1260

==>2x=1260-52

==> 2x=1208

==>x=604

Hence, the no of boys=604

then the no of girls=604+52=656

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