Question

A teacher buys 4.25 ounces of a compound for an experiment. The compound costs $2.32 per ounce. The teacher pays with a $10 bill. How much change does the teacher receive?

Answer 1

Given:

Compound for an experiment = 4.25 ounces

Compound costs = $2.32 per ounce.

Teacher pays = $10

To find:

The amount of change teacher receive.

Solution:

Cost of 1 ounce of compound = $2.32

Cost of 4.25 ounce of compound = 4.25 × $2.32

= $9.86

It is given that, the teacher pays with a $10 bill.

Amount of change = $10 - $9.86

= $0.14

Therefore, the teacher receive $0.14 change.