Margot can purchase tile at a store for .79 per tile and rent a tile saw for $24.at any other store she can borrow 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

If x= number of tiles purchased, then at store 1 she will buy x number of tiles for 79 cents per tile and pay 24$ for the saw. At store 2, there is no rental fee if she pays $1.19 per tile for x number of tiles. So you have to write 2 equations, one for each store, and make them equal to each other.

0.79x + 24 = 1.19x

0.4x = 24

x=60 tiles