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Nanyang 2025 P6 Maths Prelim — Paper 1 Booklet A Q8 Solution

Paper 1 Booklet A · Q8 · 1 mark · Algebra

Question

A fish burger cost $\$m$. A beef burger cost $\$(m + 1)$. The total cost of 4 fish burgers and 1 beef burger is $\$21$. Find the cost of 1 beef burger.

1. $5
2. $4.40
3. $4.20
4. $4

Answer: 1

Worked solution

$4m + (m + 1) = 21$, so $5m + 1 = 21$, giving $5m = 20$ and $m = 4$. The beef burger costs $m + 1 = \$5$.

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