A piece of rope is cut into 3 pieces with the ratio 2 : 3 : 4. If the length of rope is 45 m, how long is the longest?
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Step-by-step explanation:
Ratio: 2:3:4
Total length =45m
2x+3x+4x=45
9x=45
x=5m
longest =4x=4*5=20m
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