Mr Tan bought n packets of kueh at $3 each. He also bought (n + 5) packets of kaya toast at $2 each. He spent $35 altogether. Find the value of n.
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Worked Solution
Step 1: Write an equation for the total cost.
3n + 2(n + 5) = 35
Step 2: Expand the bracket.
3n + 2n + 10 = 35
Step 3: Collect like terms.
5n + 10 = 35
Step 4: Solve for n.
5n = 35 - 10 = 25
n = 25 / 5 = 5
Answer: 5
Correct answer: 5
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