Michael picks 1kg of tomatoes from his greenhouse. He knows that fresh tomatoes are 95% water by weight. He puts them on the window ledge to ripen, but forgets about them. After a week, he discovers that they have dried out and are now only 90% water by weight. How much do the tomatoes now weigh?

Question

Mathematics

Marianna Morton

6 September, 22:46

Michael picks 1kg of tomatoes from his greenhouse. He knows that fresh tomatoes are 95% water by weight. He puts them on the window ledge to ripen, but forgets about them. After a week, he discovers that they have dried out and are now only 90% water by weight. How much do the tomatoes now weigh?

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Answers (2)

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Rhys Deleon · Answer 1

The non-water mass (.05 kg) is now 10% of the total weight. The tomatoes now weigh 0.50 kg.

Cullen Patterson · Answer 2

First you must work out 100%

so 1000g/0.95% = 1052.631579g = 100%

then - 10% to get 90% water by weight which is 947.3684

therefore the answer is 947g or 0.95kg