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Question

A large watermelon weighs 20 kg and 96% of its weight is water. When it is kept in the sun, due to evaporation of water, it was observed that now, 95% of its weight is water. What is the reduction in the weight of the watermelon?


A
18 kg
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B
17 kg
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C
16.5 kg
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D
16 kg
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Solution

The correct option is C 16 kg
Weight of water in 20 kg watermelon =96100×20=19.2 kg
                                          
Let ‘x’ kg of water be evaporated, then
(19.2x)=95×(20x)100
1920100x=190095x
5x=20
x=4 kg
Reduced weight = 20 - 4 =16 kg

Mathematics

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