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A 140-cm wire is cut in two pieces. One piece is three times as long as the other piece. Find the length of the longer piece?

Sagot :

Shorter piece: x cm
Longer piece: 3x cm

Equation:
x + 3x = 140
4x = 140
4x/4 = 140/4
x = 35

Substitute 35 for x:
Shorter piece: x = 35 cm
Longer piece: 3(35) = 105 cm

ANSWER:  The longer piece is 105 cm in length.

Check:
35 cm + 105 cm = 140 cm
140 cm = 140 cm

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