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fifthward92
19.08.2021 •
Mathematics
I really need help here. It said my answer is wrong so ignore that.
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Ответ:
1) 112 m
2) 240 m
Step-by-step explanation:
Let the length of pieces be 5x, 3x and 7x m.
Where 3x is the shortest piece and 7x is the longest piece.
According to the given condition:
7x - 3x = 64
4x = 64
x = 64/4
x = 16 m
1) Length of longest piece = 7x = 7* 16 = 112 m
2) length of the Electrical cord in meters before it was cut = 5x + 3x + 7x = 15x = 15*16 =240 m