At a school carnival, Wei Hao spent $19.50 in total. He bought 2 plates of mee goreng at $4.50 each and (n) cups of barley water at $1.50 each. How many cups of barley water did he buy?
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Worked Solution
Step 1: Find the cost of the 2 plates of mee goreng.
2 × $4.50 = $9.00.
Step 2: Find the amount Wei Hao spent on barley water.
$19.50 − $9.00 = $10.50.
Step 3: Form and solve the equation 1.50n = 10.50.
n = $10.50 ÷ $1.50 = 7 cups.
Answer: 7
Correct answer: 7
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