At a United Way fund raiser, students sold cinnamon buns for $2 each or 3 for $5. They sold 500 all together, and raised $900. How many of the 3 for $5 were sold?
A) 100
B) 200
C) 300
D) 250
E) 150

Question

Quizplus · Accepted Answer

Let x be the number of single buns sold, and y be the number of sets of 3 buns sold. The equations are: x + 3y = 500 and 2x + 5y = 900. Solving these gives y = 300.

At a United Way Fund Raiser, Students Sold Cinnamon Buns