Medium Math Class 9 Level 8

The angles of a triangle are x + 50, 2x - 20 and 3x - 30. What is x?

एक त्रिभुज के कोण x + 50, 2x - 20 और 3x - 30 हैं तो x का मान क्या होगा?

A 25° / 25° B 30° / 30° C 35° / 35° D 40° / 40°
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Correct Answer

B. 30° / 30°

Explanation

The sum of the angles is 6x and 6x = 180° so x = 30°.

कोणों का योग 6x है और 6x = 180° इसलिए x = 30°।

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