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BECE Mathematics 2022 Paper

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Question : 38

Total: 40

Express

15:12

1:n

$1:0.8$
$1:12$
$1:15$
$1:1.2$

Solution:

Concept:

To rewrite a ratio

15:12

as

1:n

, make the first term equal to

1

by dividing both terms by

15

.

Explanation:

The given ratio is

15:12

.

We need the first term to be

1

.

Since

15 \div 15 = 1

, divide both parts of the ratio by

15

.

This gives

\frac{15}{15} : \frac{12}{15}

.

Now simplify each fraction:

\frac{15}{15} = 1

\frac{12}{15} = 0.8

Therefore, the ratio becomes

1:0.8

.

This matches option A.

Answer:

15:12 = 1:0.8

Correct option: A.

1:0.8

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