A dance studio uses square mirror tiles to cover two walls. Each wall measures 9 feet by 22 feet, with a 1 foot gap at the floor. How many mirror tiles are needed to cover both walls?

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Multiple Choice

A dance studio uses square mirror tiles to cover two walls. Each wall measures 9 feet by 22 feet, with a 1 foot gap at the floor. How many mirror tiles are needed to cover both walls?

Explanation:
Count how many square tiles fit across and up each wall using the available dimensions after the gap. With a 2-foot by 2-foot tile, the 1-foot gap at the floor leaves 8 feet of usable height (9 − 1 = 8). That fits exactly 4 tiles high (8 ÷ 2 = 4). The width is 22 feet, which fits 11 tiles across (22 ÷ 2 = 11). So each wall uses 4 × 11 = 44 tiles. There are two walls, so 44 × 2 = 88 tiles in total. The gap ensures you can use a whole number of tiles vertically, making the total straightforward.

Count how many square tiles fit across and up each wall using the available dimensions after the gap. With a 2-foot by 2-foot tile, the 1-foot gap at the floor leaves 8 feet of usable height (9 − 1 = 8). That fits exactly 4 tiles high (8 ÷ 2 = 4). The width is 22 feet, which fits 11 tiles across (22 ÷ 2 = 11). So each wall uses 4 × 11 = 44 tiles. There are two walls, so 44 × 2 = 88 tiles in total. The gap ensures you can use a whole number of tiles vertically, making the total straightforward.

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