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BECE Mathematics 2010 Paper

Question : 40

Total: 40

Solution:

Concept:

Find Ama's age first, then simplify the ratio of Kwame's age to Ama's age.

Explanation:

Kwame's age is

18

years.

Ama is

9

years older than Kwame.

So, Ama's age

= 18 + 9 = 27

years.

Now write the ratio of Kwame's age to Ama's age:

18 : 27

Simplify by dividing both terms by their greatest common factor, which is

9

18 \div 9 = 2

and

27 \div 9 = 3

Therefore, the ratio is

2 : 3

Answer:

Option C:

2:3

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