Asked by Ariel

A box of tacks weighs 120 grams when full, when half full it weighs 70 grams. How many grams does the box weigh when empty?
Answered by bobpursley
half of the tacks must have a mass of 50 grams. so, I would expect all of the tacks to have a mass of 100g, and the mass of the box would be 20g.

How much does it WEIGH? .02*9.8 Newtons.
Answered by Ms. Sue
120 - 70 = 50

2 * 50 = 100

120 - 100 = ?


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