If a:b = 5:8, x:y = 25:16, evaluate a/x : b/y ?
Pretty straight forward question, we’re going to solve this with the simplest method as follows:
From the question, you can safely say:
a = 5
b = 8
x = 25
y = 16
therefore, a/x = 5/25 = 1/5
also, b/y = 8/16 = ½
a/x : b/y
= 1/5 : ½
= ⅕ ÷ ½
= ⅕ × 2/1
= 2:5 = option A
Now for the right answer to the above question:
- Option A is correct.
- Option B is incorrect.
- C is not correct.
- D is not the correct answer.
You may please note these/this:
- The sign ‘:’ is called ratio.
- Ratio simply mean the same thing as division in this calculation.
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/ culled from 2020 JAMB-UTME mathematics past question 13 /