Q6. (a) In 2005 the cost of posting a letter was 28 cents. A company posted 1200 letters and was given 4% discount on the cost. Calculate the total discount.
(b) In 2006 the cost of posting a letter was increased from 28 cents to 35 cents. Calculate the percentage increase in the cost of posting a letter.
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Answer:
b)After the price increase to 35 cents, the cost to the company of posting 1200 letters was $399
a)32256
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