Pls show full steps also

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

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?