A new pencil weighs 25 grams. After the pencil has been used for a while, it weighs 2 decagrams. How many grams of the pencil have been used up. plz explain how to solve.

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asked Dec 25, 2017 46.4k views

2 Answers

Iaroslav Sobolev · Answer 1 · 2017-12-31T23:58:03+0000

24.8 decagrams have been used,each decagram is 1/10 of a gram so if there's two decagrams left,24.8 grams have been used so far.