Question: A school buys x sets of markers. Each set costs $12. They also buy a $50 whiteboard. Their total spending is $146. What equation represents the situation, and how many marker sets did they buy?
A) 12x=146+50; 8 sets
B) 12x+50=146; 8 sets
C) 12x−50=146; 16 sets
D) 50x+12=146; 3 sets
Correct answer: B
Grade: 6 | Topic: Expressions and Equations | Difficulty: Medium | Standard: 6. EE. B. 7