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BECE Mathematics 2014 Paper

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Question : 13

Total: 40

Kofi paid rent of GH₵1,800.00 each year. If the rent is 0.3 of his annual income, find his annual income.

GH₵600.00
GH₵5,400.00
GH₵6,000.00
GH₵18,000.00

Solution:

Concept:

Translate the word “of” into multiplication and solve for the unknown annual income.

Explanation:

Let annual income be

x

.

Rent is

0.3

of annual income, so:

1800 = 0.3 \times x

Divide both sides by

0.3

:

x = \frac{1800}{0.3}

Write

0.3

as

\frac{3}{10}

:

x = 1800 \times \frac{10}{3}

x = 600 \times 10

x = 6000

Therefore, the annual income is GH₵6,000.00.

Answer:

C. GH₵6,000.00

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