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BECE Mathematics 2015 Paper
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© africaexams.com
Question : 11
Total: 40
Abena spent
1
5
of her money on sweets,
4
7
on provisions and the rest on gari. What fraction of her money did she spend on gari?
27
35
13
35
8
35
5
35
Validate
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
=
1
5
+
4
7
=
7
×
1
+
5
×
4
35
=
7
+
20
35
=
27
35
Fraction spent on Gari
=
1
−
27
35
Every number is divisible by 1.
1
=
1
1
Fraction spent on Gari
=
1
−
27
35
=
1
1
−
27
35
=
35
×
1
−
1
×
27
35
=
35
−
27
35
=
8
35
© africaexams.com
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