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JAMB Mathematics 2022 Paper

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Question : 27

Total: 39

The cost C of running a school is directly proportional to the number of students N, if 20 students cost #10,000, How many students can #1,000,000 cover?

3000
1000
2000
4000

Solution:

Concept:

Direct proportion means the cost per student remains constant.

Explanation:

If 20 students cost

\text{N}10{,}000

, then cost per student is

\frac{10{,}000}{20} = 500

.

For a budget of

\text{N}1{,}000{,}000

, divide by the cost per student:

\frac{1{,}000{,}000}{500} = 2{,}000

.

Answer:

2,000 students (Option C).

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