2013 · Q30
In the diagram (not to scale) given above, the value of x is
general-mental-abilityquantitative-aptitude
- A51°
- B360/7°
- C62 6/7°
- D49 4/7°
Explanation
At B, 4y + 3y = 180° gives y = 180/7; the interior angles sum to 180°, so x = 180 − 3y − 2y = 180 − 900/7 = 360/7 degrees.