Hello everyone,

I have a question for everyone i.e.,

a man takes 1000 kg watermelons which has 99% water contents but after a distance the water contents reduced to 98% how much weight has reduced of the watermelons?

The correct answer is 500 but i cant figure out that it is this, acc. to my calculations the answer is 10.

How this is possible.. Pls Help...

Thanks

Bharat

XI-SCI-B

(I have searched on net for this question but no result, so dont waste time in searching the web)

Rather than thinking about the part of the watermelon that is water, think in terms of the part that is not water. This part does not change as the watermelon sits in the sun.

At the start 1% of the 100 kg watermelon is not water, that is 1 kg of the watermelon is not water. After sitting in the sun this 1 kg of material is 2% of the watermelon since the part that is water is 98%. The problem can thus be reworded to ask, what weight is a watermelon if 2% if it weighs 1 kg?

Suppose the watermelon weighs W kgs then 2% of W is 1, or W(2/100) = 1 so W is 50 kgs.