Shem makes 2.5 times more money per hour than Kem. If Kem earns $4 per hour, how much does Shem earn for an 8-hour workday?
A step-by-step solution is:
80
Shem earns $4 x 2.

5 = $10 in an hour.

So, Shem earns $10 x 8 = $80 for an 8 - hour workday.

.

The answer: 80