How many tiles of the size and shape shown above are needed to completely cover a rectangular floor measuring 30 feet by 20 feet?
(A) 120
(B) 150
(C) 200
(D) 250
(E) 300
[Reveal] Spoiler:
Attachment:
2017-10-04_1121_003.png [ 3.39 KiB | Viewed 9 times ]
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