7TH GRADE MATH NEEDED ASAP!! margo can purchase tile at a store for $0.99 per tile and rent a tile saw for $12. 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?

OK

At the first shop: Cost =  

$

0.79

×

x

+

$

24

=

0.79

x

+

24

At the second shop: Cost =  

$

1.19

×

x

=

1.19

x

If the cost is the same:

1.19

x

=

0.79

x

+

24

←

solve for x

1.19

x

−

0.79

x

=

24

0.4

x

=

24

x

=

24

0.4

x

=

60

tiles

Step-by-step explanation:

If she buys less than 60 tiles, then the second shop is cheaper.

If she buys more than 60 tiles, then the first shop is cheaper

it could 14.28 but if its not that one then it has to be the 17 one. hope this ! : )

step-by-step explanation:

.

step-by-step explanation: