AlgebraEasyShorter piece of a cut ribbon
Algebra practice question
A ribbon 30 centimetres long is cut into two pieces. One piece is 8 centimetres longer than the other. How long, in centimetres, is the shorter piece?
Answer: 11
s + (s + 8) = 30 gives 2s = 22, so s = 11.
Common wrong answers
- If you answered 15
- 15 halves 30, ignoring the 8-centimetre difference.
- If you answered 19
- 19 is the longer piece.
- If you answered 22
- 22 is 2s, before halving.
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