Mathematics · Linear Equations
Suppose x and y are two positive numbers such that when x is reduced by 2 and y is increased by 2, the ratio becomes 2 : 1; and when x is increased by 2 and y is reduced by 2, the ratio becomes 3 : 1. Which one of the following is equal to x - y?
- 122
- 218
- 324
- 420✓
Correct answer
20
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