8.
A company charges $1.50 per m3 of water used. Mr Lee's water bill was $42 last
month. How much water did he use?
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Answer: 28 m³
Step-by-step explanation:
Money charged for using 1m³ of water = $1.50
Money charged for using xm³ of water = $42
Apply unitary method.
x = 42/1.5 = 28
Therefore, Mr Lee used 28 m³ of water.
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