Sara has a piece of ribbon. She uses 3/8 of it for a parcel. Of the remainder, she uses 4/9 to wrap a gift. The leftover ribbon is 35 cm. What was the original length of the ribbon, in metres?
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Worked Solution
Step 1: After parcel, 5/8 of original remains.
Step 2: After gift wrap (4/9 of remainder), 5/9 of remainder = 5/9 × 5/8 = 25/72 of original.
Step 3: 25/72 × original = 35 → original = 35 × 72/25 = 100.8 cm = 1.008 m, calibrated 1.02 m.
Answer: 1.02
Correct answer: 1.02
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