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  1. The angles of a triangle are (x + 5)°, (2x – 3)° and (3x + 4)°. The value of x is
    1. 30
    2. 31
    3. 29
    4. 28
Correct Option: C

Sum of angles of a triangle = 180°
∴ x + 5 + 2x – 3 + 3x + 4 = 180°
⇒ 6x + 6 = 180°
⇒ 6x = 180 – 6 = 174°

⇒ x =
174
= 29
6


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