Question
Sean wanted to cut small identical 5 cm by 4 cm rectangles from a rectangular cardboard measuring 28 cm by 15 cm. What is the maximum number of complete small rectangles Sean could cut? (Note: Sean could rotate the small rectangle.)
3 m

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Sean wanted to cut small identical 5 cm by 4 cm rectangles from a rectangular cardboard measuring 28 cm by 15 cm. What is the maximum number of complete small rectangles Sean could cut? (Note: Sean could rotate the small rectangle.)