You have a wet sponge that weighs 200 grams which is 99% water by weight. If you squeeze some of the
water out of the sponge such that it is now only 98% water by weight, what would the wet sponge now
: 100 grams.
: At first, 1% of the total weight is the sponge itself (since 99% of the weight is
water). Therefore, the sponge weighs 2 grams when dry (1% × 200 grams). After squeezing some of the water
out, 2% of the total weight is the sponge itself (since 98% of the weight is water). If we let
represent the total weight of the sponge, then: (2/100) x = 2 grams and therefore
x = 100 grams.
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be mentioned/clarified in the question or solution, bug, typo, etc.)?