Question

Haru is using a scale to measure the mass of a rock. The scale reads 5.5 grams before he puts a rock on it. When he puts the rock on the scale, he notes that the scale reads 53.5 grams. What must Haru do to get the correct mass of the rock?

Answer 1

Explanation:

If the scale itself reads 5.5grams that means the 53.5 grams is the total weight of the rock and the scale. To get the mass of the rock you take:

53.5-5.5 =48g

So the mass of the rock is 48g.