A certain store sold pens for $0.35 each and pencils for $0.25 each. If a customer purchased both pens and pencils from the store for a total of $1.80, what total number of pens and pencils did the customer purchase?  Choose the correct choice from the following options
A) 6	B) 9	C) 10	D) 11	E) 12
Answer: Algebraically, the question looks like this: 2.5 = 0.35x + 0.25y There are three possible numbers of pens that fit that requirement:   1 pen: $0.35   2 pens: $0.70   3 pens: $1.05 and 3 pencils for $0.25 each. That's 3 pens and 3 pencils for a total of 6 pens and pencils. Choice (6) is correct.
<result>A</result>
A certain store sold pens for $0.35 each and pencils for $0.25 each. If a customer purchased both pens and pencils from the store for a total of $1.80, what total number of pens and pencils did the customer purchase?