Question

Margo can purchase tile at a store for $0.69 per tile and rent a tile saw for $28. At another store she can

borrow the tile saw for free if she buys tiles there for $1.39 per tile. How many tiles must she buy for the
cost to be the same at both stores?

Answer 1

30 tiles need to buy for same cost in both store.

Explanation:

Let x be the number of tiles to buy for same cost in both store.∴18+0.69⋅n=1.29⋅n∴ 1.29n − 0.69n = 18 or 0.6n =18∴n=180.6=30 Therefore, 30 tiles need to buy for same cost in both store