Anoop weights 48 kg, sits on a see-saw 4 m from the fulcrum. Another boy Ajay who weights 64 kg wants to sit on the see-saw. What percentage in the length away from the fulcrum, must he sit in order to balance Anoop?

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Solution

The correct option is B $- 25$ %
$E \times E A = L \times L A$
$48 \times 4 = 64 \times L A$
$L A = \frac{48 \times 4}{64}$
$L A = 3 m$
% change in length $= \frac{3 - 4}{4} \times 100$
$= - 25$ %

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Anoop weights 48 kg, sits on a see-saw 4 m from the fulcrum. Another boy Ajay who weights 64 kg wants to sit on the see-saw. What percentage in the length away from the fulcrum, must he sit in order to balance Anoop?

The correct option is B −25%E×EA=L×LA48×4=64×LALA=48×464LA=3m% change in length =3−44×100=−25%

The correct option is B $- 25$ %
$E \times E A = L \times L A$
$48 \times 4 = 64 \times L A$
$L A = \frac{48 \times 4}{64}$
$L A = 3 m$
% change in length $= \frac{3 - 4}{4} \times 100$
$= - 25$ %