When 50% of a number A is added to B, the second number B increases by 25%. The ratio between the numbers A and B is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 1: 2.
| Understanding/Application |
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[(50/100) × A + B] = [B + (25/100) × B] 50A/100 + B = B + 25B/100 50A/100 = 125B/100 - B |
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50A/100 = 25B/100 A/2 = B/4 A/B = 2/4 A/B = 1/2 A: B = 1: 2 |