If x : y = 3 : 2 and x + y = 90, then the value (x – y) is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 18.
| Understanding/Application |
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x/y =3/2 x = 3y/2 |
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x + y = 90 3y/2 + y = 90 5y/2 = 90 5y = 180 y = 36 x = 90 - y = 90 - 36 = 54 x - y = 54 - 36 = 18 |