ANSWER
7 (Option D)
Step-by-step explanation
Given:
Number of times the traffic light Green = 6
Number of times the traffic light Yellow = 2
Number of times the traffic light Red = ?
Desired Outcome:
Number of times the traffic light Red
Total number of times for the traffic lights
![\begin{gathered} \text{ Total times = Times for traffic light Red + Times for traffic light Green + Times for traffic light Yellow} \\ 15=Red+6+2 \\ 15=Red+8 \\ substract\text{ 8 from both sides} \\ 15-8=Red+8-8 \\ \text{ Times for traffic light Red = 7} \end{gathered}]()
Hence, the number of times the traffic light Red was 7.