Answer:
b) 6
Explanation:
Given information,
→ P = (5x + 30)°
→ S = 80°
Forming the equation,
→ P + S = 140°
→ (5x + 30)° + 80° = 140°
Now the value of x will be,
→ (5x + 30)° + 80° = 140°
→ 5x + 110° = 140°
→ 5x = 140° - 110°
→ x = 30°/5
→ [ x = 6° ]
Hence, the value of x is 6.