5. A calculator cost $22. A pen cost $4 less than a calculator.
Mr Pang bought half as many calculators as pens. He paid a total of $3480 for
the calculators and pens. How many pens did Mr Pang buy?
Answer:
Mr Pang bought half as many calculators as pens. He paid a total of $3480 for
the calculators and pens. How many pens did Mr Pang buy?
Answer:
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