Question

margo can purchase tile at a store for $0.79 per tile and rent a tile saw for $24.At another store she can barrow the tile saw for free if she buys tiles there for $1.19 per tile. How many tiles must she buy for the cost to be the same at both stores?

Answer 1

First set them equal to each other .79x+24=1.19x then subtract .79x and get 24=.4x so x=60 which means if you but less than 60 tiles, option 2 is better, more than 60 tiles, take option 1 and exactly 60 it is evenly priced