Exams › SSC CGL (Prelims) › General

If p : q = 4 : 5, then find \((8p + 3q) : (8p - 3q)\).

1. 47: 17
2. 21: 37
3. 15: 33
4. 3: 5

Correct answer: 47: 17

Solution

Let p = 4x and q = 5x. Then 8p + 3q = 32x + 15x = 47x and 8p - 3q = 32x - 15x = 17x. So the ratio is 47:17.

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