Advanced Mathematics Primary 3 Fractions

Amir uses 2/3 of a roll of ribbon to wrap gifts. He then uses 3/4 of the remaining ribbon to decorate a box. What fraction of the whole roll does he use to decorate the box?

A 1/4
B 3/4
C 11/12
D 1/12
Show Worked Solution

Worked Solution

Step 1: Find the remaining ribbon after wrapping gifts. Remaining = 1 − 2/3 = 1/3 of the whole roll. Step 2: Find the decoration fraction. 3/4 × 1/3 = (3 × 1) ÷ (4 × 3) = 3/12 = 1/4. Answer: Amir uses 1/4 of the whole roll to decorate the box.

Correct answer: 1/4

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