Can someone help me with this question

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

Can anyone me with 32,33,36,37,and 40.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.