Advanced Mathematics Primary 5 Fractions

A jug is 2/3 full of orange juice. Sara drinks 1/4 of the juice in the jug. Then Wei Hao drinks 1/3 of what is left. After they have drunk, the volume of juice in the jug is 240 ml. Find the FULL CAPACITY of the jug.

A 810 ml
B 540 ml
C 960 ml
D 720 ml
Show Worked Solution

Worked Solution

Step 1: Initial juice = 2/3 of capacity. Step 2: After Sara drinks 1/4, remaining = 3/4 × 2/3 = 1/2 of capacity. Step 3: After Wei Hao drinks 1/3 of that, remaining = 2/3 × 1/2 = 1/3 of capacity. Step 4: 1/3 × capacity = 240 ml → capacity = 720 ml. Answer: 720 ml

Correct answer: 720 ml

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