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JAMB Mathematics 2016 Paper

Question : 22

Total: 50

Solution:

Concept:

Bisi’s share is a fraction of the total, based on the given ratio.

Explanation:

The ratio is

2:3:5

, so the total number of parts is

2 + 3 + 5 = 10

Bisi receives

2

parts out of

10

parts.

Let the total number of pencils be

x

Bisi’s share is

\frac{2}{10}x

Since Bisi got

5

pencils:

\frac{2}{10}x = 5

Simplify:

\frac{x}{5} = 5

, so

x = 25

Therefore, the total number of pencils shared out was

25

Answer:

25

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