talaangoshtari wrote:A certain store sells two types of pens: one type for $2 per pen and the other type for $3 per pen. If a customer can spend up to $25 to buy pens at the store and there is no sales tax, what is the greatest number of pens the customer can buy?
A.9
B.10
C.11
D.12
E.20
We can PLUG IN THE ANSWERS.
Since the question stem asks for the GREATEST number of pens that can be purchased for $25, start with the biggest answer choice.
E: 20
Since the price of each cheaper pen = $2, and 20*2 = $40, it is not possible to buy 20 pens.
Eliminate E.
D: 12
Since the price of each cheaper pen = $2, and 12*2 = $24, it is possible to buy 12 pens.
The correct answer is
D.
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