Question

Gomez found the masses of three rocks for a science project. The first rock had a mass of 19.28 grams the second rock had a mass of 25.3 grams and the third rock had a mass of 46.3 grams. How much greater was the mass of the third rock than the combiend mass of the other two rocks.

Answer 1

1.72 because rocks 1 and 2 add up to 44.58 46.3-44.58=1.72

Answer 2

1.72 grams.

Explanation:

We have been given that Gomez found the masses of three rocks for a science project. The first rock had a mass of 19.28 grams the second rock had a mass of 25.3 grams and the third rock had a mass of 46.3 grams.

First of all, we will add the masses of 1st and 2nd rock to find the combined mass of both rocks.

`\text{Combined mass of 1st and 2nd rock}=\text{19.28 g+25.3 g}`

`\text{Combined mass of 1st and 2nd rock}=\text{44.58 g}`

Now we will subtract the combined mass of both rocks from the mass of 3rd rock.

`\text{Difference of mass }=\text{46.3 g}-\text{44.58 g}`

`\text{Difference of mass }=\text{1.72 g}`

Therefore, the mass of the 3rd rock is 1.72 grams greater than the combined mass of the other two rocks.