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If you use 40cm square tiles, you need 300 pieces. If you use 50cm tiles, how many pieces do you need? (using the method of solving proportion) there are 161 meters of ribbons. First, you use 21 meters to make 12 wreaths. According to this calculation, how many more wreaths can you make for the remaining ribbons? (using the method of solving proportion)
1. If you use 50cm tiles, if you need x tiles, then x: 300 = 40 ^ 2: 50 ^ 2, then x = 192. A: you need 192 tiles. 2. If you can make x wreaths with the remaining ribbons, then 21:12 = (161-21): X, then x = 80. A: you can make 80 wreaths with the remaining ribbons
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