Question

Holly earns $30 for babysitting 5 hours. She earns $28 when she does chores for 4 hours. Which compares the unit rates?
The unit rate for babysitting is $2 per hour more than the unit rate for doing chores.
The unit rate for babysitting is $1 per hour more than the unit rate for doing chores.
The unit rate for doing chores is $1 per hour more than the unit rate for babysitting.
The unit rate for doing chores is $2 per hour more than the unit rate for babysitting.

Answer 1

Babysitting: $30 ÷ 5 = $6/hour.
Chores: $28 ÷ 4 = $7/hour.
Difference: $7 − $6 = $1.

Answer: The unit rate for doing chores is $1 per hour more than the unit rate for babysitting.