You are remodeling your kitchen. you've contacted two tiling companies who gladly told you how long it took their workers to tile a floor of a similar size. jim completed half the floor in 8 hours. pete completed the other half of the floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles?

140 tiles per hour.

Step-by-step explanation:

 1. Let's call:

j: Jim's rate.

p: Pete's rate.

2. According to the problem, Jim completed half the floor in 8 hours and Pete completed the other half of the floor in 7 hours, therefore, you can express this as following:

3. The problem says that Pete can lay 20 more tiles per hour than Jim, this means that:

4. Substitute the second expression into the first expression and solve for :

5. The answer is: Jim can lay 140 tiles per hour.

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation: