word problem

Question

Caleb sold some boxes of candy. Some sold for $2, and some sold for $3. He sold a total of 35 boxes and received $92 . How many boxes did he sell for $2?

Answer 1

a + b = 35 -------> b = 35 - a

2a + 3b = 92

 

Now, we substitute...

 

2a + 3(35 - a) = 92

2a + 105 - 3a = 92

a = 13

 

He sold 13 $2 boxes!