Professor Garrison measured the composition of metals in a sample. The sample contained 3.89 kilograms of copper, 0.64 kilograms of nickel, and 7.6 kilograms of iron. How many kilograms was Professor Garrison's sample?

Question

kilograms

Answer 1

To find out how many kilograms Professor Garrison's sample was, we need to add up the weights of copper, nickel, and iron.

The weight of copper is 3.89 kilograms.
The weight of nickel is 0.64 kilograms.
The weight of iron is 7.6 kilograms.

Adding these weights together: 3.89 + 0.64 + 7.6 = 12.13 kilograms.

So, Professor Garrison's sample weighed 12.13 kilograms.