Test Index

BECE Mathematics 2015 Paper

Question : 11

Total: 40

Abena spent

\frac{1}{5}

\frac{4}{7}

Solution:

Summation of all fraction parts should give the whole (1)

When you sum known fractions and you subtract the result from 1 , you will get the rest of the fraction.

Total known fraction spent

=\frac{1}{5}+\frac{4}{7}=\frac{7 \times 1+5 \times 4}{35}=\frac{7+20}{35}=\frac{27}{35}

Fraction spent on Gari

=1-\frac{27}{35}

Every number is divisible by 1.

1=\frac{1}{1}

Fraction spent on Gari

=1-\frac{27}{35}=\frac{1}{1}-\frac{27}{35}=\frac{35 \times 1-1 \times 27}{35}=\frac{35-27}{35}=\frac{8}{35}

Go to Question:

Prev Question

Next Question