Krishna and Karan are on the see-saw. Krishna's weight is 60 kg and Karan's is 80 kg. Who among the following kids can help Krishna balance the see-saw. (All of them can sit at extreme ends only).

Pappu - 21kgs

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Puppy - 23kgs

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Pandu - 20kgs

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Mahi -10kgs

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Solution

The correct option is C
Pandu - 20kgs

It is given that Krishna's weight is 60 kg and Karan's weight is 80 kg. To balance the see-saw Krishna needs another person.

Let the required weight needed to balance the see-saw be $x$ kg
Then, $60 + x = 80 x = 80 - 60 = 20$

So, Krishna should take help of a kid who weighs exactly 20 kg. Thus, Pandu would be the correct selection.

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