Mary has 2 pieses of cloth. One piece is 72 inches wide and the other piece is 90 inches wide. She wats to cut both pieces into strips of equal width that are as wide as possible. How wide does she need to cut the strips?
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Given:
72 inches
90 inches
Solution:
3 | 72 90 (common factor: 3)
3 | 24 30 (common factor: 3)
2 | 8 10 (common factor: 2)
| 4 5 (no common factor)
3 × 3 × 2 = 18
The G C F is 18.
Final Answer:
She should cut the strips 18 inches wide.