1.

I carried 1000 kg of watermelon in summer by train. In the beginning, the water content was 99%. By the time I reached the destination, the water content had dropped to 98%. The reduction in the weight of the watermelon was-A. 10 kgB. 50 kgC. 100 kgD. 500 kg

Answer» Correct Answer - D
Initially `1000kg [ 990kg " water"+10 kg" rest"]`
Now x kg melon `[(98x)/(100)" water"+(2x)/(100)" rest"]`
Weight of solid part should remain same
`(2x)/(100)=10 rArr x =500`
Weight reduction 1000-500=500kg


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