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BECE Mathematics 2019 Paper

Question : 25

Total: 40

Solution:

Let

x=

the number

three times a certain number

=3 x x

Subtracted from three times a certain number

=3 x x-12=3 x-12

The result is divided by four

=\frac{3 x-12}{4}

is means

=

, hence the answer is

18 \Rightarrow \frac{3 x-12}{4}=18

Now solve for the value of

x

\frac{3 x-12}{4}=18

Multiply both sides by 4 to get rid of the fraction

\;3 x-12=18 \times 4

\;3 x-12=72

\;3 x=72+12

\;3 x=84

Divide both sides by 3

\;\frac{3 x}{3}=\frac{84}{3}=28

\; \Rightarrow x=28

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