How many paper clips will it take to balance the scale, if it is determined that a 1 centimeter cube of aluminum has the mass of 2.7 grams?

We know that the mass of one papper clip is 1 gram.

now, on the other side of the balance there is a cube centimeter of aluminium, that has a mass of 2.7 grams.

Then, if we want that the mass is equal in both sides, we must have:

X*1g = 2.7g

X=2.7g/1g = 2.7

So we need 2.7 paper clips, rounded to the next whole number, 3 papper clips.

Explanation:

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