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Quantitative Aptitude

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Mensuration

Question
4 out of 35
 

The angle of a triangle are in are in a ratio of 3 : 5 : 4 respectively. What is the difference between twice the smallest angle and largest angle?



A 25°
B 30°
C 45°
D 15°
E None of these

Ans. D

3x + 5x + 4x = 180°

So, x = 15°

Smallest angle = 3 × 15 = 45° × 2 = 90°

Largest angle = 5 × 15 = 75°

So difference = 90° - 75° = 15°

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