A 70cm long wire is to be cut into two pieces such that one piece will be 2/5 as long as the other. How many centimetres will the shorter piece be ?

A 70cm long wire is to be cut into two pieces such that one piece will be 2/5 as long as the other. How many centimetres will the shorter piece be ? Correct Answer 20

Hints: Let the other price be of length x cm, so the shorter price = 2/5 of x = 2x / 5 Now, 2/5 x + x = 70 7/5 x = 70 x = 50 and 2/5 x = 2/5 × 50 = 20 cm
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