Nurul bought 5 notebooks for $80. At the same rate, how many notebooks can she buy with $144?
- 8 notebooks
- 9 notebooks
- 10 notebooks
- 45 notebooks
Need a hint?
Find the cost of 1 notebook before finding how many notebooks she can buy.
Worked answer
- Cost of 1 notebook = $80 ÷ 5 = $16.
- Number of notebooks = $144 ÷ $16 = 9.
The mistake this question tests
Left out the units
A common mistake is to multiply the final answer by the original 5 notebooks. The total amount must instead be divided by the cost of 1 notebook.
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