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Two numbers are respectively 35% and 80% more than a third number. The ratio of...

Mathematics
JAMB 2023

Two numbers are respectively 35% and 80% more than a third number. The ratio of the two numbers is

  • A. 7 : 16
  • B. 3 : 4
  • C. 16 : 7
  • D. 4 : 3
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Correct Answer: Option B
Explanation

Let the third number = \(x\)

Then the first number = 100% \(x + 35%x = 135\)%\(x = \frac {135x}{100} = 1.35x\) (Note: 100% \(x = x\))

The second number = 180% \(x = \frac {180x}{100} = 1.80x\)

∴ The ratio of the first number to the second number = \(1.35x : 1.80x = 3 : 4\)

There is an explanation video available below.


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Explanation Video

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Post UTME Past Questions Agent
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now