Test Index

BECE Mathematics 2018 Paper

Question : 15

Total: 40

Solution:

Concept:

This is inverse proportion because more men means fewer days to finish the same work.

Explanation:

Total work remains constant:

\text{Men} \times \text{Days} = \text{constant}

For 8 men and 12 days, total work

=8 \times 12=96

man-days.

Let 6 men take

d

days to complete the same work.

So,

6 \times d = 96

Divide both sides by 6:

d = \frac{96}{6} = 16

Therefore, 6 men will take 16 days.

Answer:

B. 16 days

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