2 Answers

The length a person can jump is inversely proportional to his weight…

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The length a person can jump is inversely proportional to his weight. If a 20kg person can jump 1.5m, find the constant of proportionality.

  • A. 30
  • B. 20
  • C. 15
  • D. 60

QUICK ANSWER…

A

SOLUTION 

Let length = L, and weight = W,

L α 1/W

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L = K/W

LW = K

Hence, 1.5 × 20 = K = 30

Now for the right answer to the above question:

  1. Option A is correct.
  2. Option B is incorrect.
  3. C is incorrect.
  4. D is not the correct answer.

QUICK TIPS…

You may please note these/this:

  • Constant k is usually introduced when the sign of proportionality is removed.

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/ culled from 2015 JAMB-UTME mathematics past question 15 /

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