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BECE Mathematics 2010 Paper

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Question : 7

Total: 40

Find the total cost of 25 pens and 75 books if each pen costs GH₵ 0.20 and each book costs GH₵ 0.30.

GH₵ 22.50
GH₵ 23.50
GH₵ 27.50
GH₵ 50.00

Solution:

Concept:

The total cost is the sum of the cost of pens and the cost of books.

Explanation:

Cost of 25 pens at

\text{GH₵}\,0.20

each:

25 \times \text{GH₵}\,0.20 = \text{GH₵}\,5.00

Cost of 75 books at

\text{GH₵}\,0.30

each:

75 \times \text{GH₵}\,0.30 = \text{GH₵}\,22.50

Total cost

= \text{GH₵}\,5.00 + \text{GH₵}\,22.50

Total cost

= \text{GH₵}\,27.50

This matches option C.

Answer:

C. GH₵ 27.50

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