SAT Math Multiple Choice Practice Question 272: Answer and Explanation
8. Mike sold a total of 48 sodas at a snack stand. The stand sells only cola and root beer. If he sold twice as many colas as root beers, how many root beers did he sell?
Correct Answer: D
D Let c be the number of colas that Mike sold and r be the number of root beers. Since the total sold is 48, . Since he sold twice as many colas as root beers,. Substituting this into the first equation gives