Question

A truck was carrying a load of 458 pounds of gravel. Another 231 pounds of gravel was loaded onto the truck.

Olivia said the truck now holds 689 pounds of gravel.

Which expression can be used to check Olivia’s answer?

Is Olivia correct?


A.689 – 458
Olivia is correct.


B.689 + 458
Olivia is not correct.


C.689 + 231
Olivia is correct.


689 – 458
Olivia is not correct.

Answer 1

A. Olivia is correct.

Explanation:

If the total amount of gravel stated is 689 pounds and you want to check your answer, you can subtract one of the two trucks from the total. Which would be either 689 - 231 or 689 - 458. Therefore, A is the correct answer.