She must buy 90 tiles for the cost to be the same at both stores
Step-by-step explanation:
Margo can purchase tile in one of two stores
- $0.89 per tile and rent a tile saw for $27 in the first store
- borrow the tile saw for free and $1.19 per tile in the second store
We need to find how many tiles she must buy for the cost to be the
same at both stores
Assume that she will buy n tiles
1st store:
∵ She buys n tiles
∵ The cost of each tile = $0.89
∵ She rents a tile saw for $27
∴ The cost of the first store = 27 + 0.89 n
2nd store:
∵ She buys n tiles
∵ The cost of each tile = $1.19
∵ She rents a tile saw for free
∴ The cost of the second store = 1.19 n
Equate the costs of the two stores
∵ 1.19 n = 27 + 0.89 n
- Subtract 0.89 n from both sides
∴ 0.3 n = 27
- Divide both sides by 0.3
∴ n = 90 tiles
She must buy 90 tiles for the cost to be the same at both stores
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You can learn more about word problem in brainly.com/question/3950386
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