Foundation Mathematics Primary 6 Ratio

In an HDB block, the ratio of adults to children is 4 : 6. Express this as an equivalent ratio with the first term being 12.

A 12 : 14
B 12 : 16
C 12 : 18
D 12 : 24
Show Worked Solution

Worked Solution

Step 1: Find the multiplying factor for the first term: 12 ÷ 4 = 3.\n Step 2: Multiply the second term by the same factor: 6 × 3 = 18.\n Step 3: Write the equivalent ratio: 12 : 18.\nCheck: 12 : 18 simplifies to 2 : 3, and 4 : 6 also simplifies to 2 : 3. ✓ Answer: 12 : 18

Correct answer: 12 : 18

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