Solution:
Then we have that Jim´s unit rate is $8.25 per hour.
Now,
Then we have that Susan´s unit rate is $7.5 per hour.
On the other hand, we have that Pierre's hourly rate is less than Jim's but more than Susan's. If x is Pierre's hourly rate, this means that:
[tex]7.5
Based on our options, we can conclude that Pierre's hourly rate is $7.75 per hour.