Carcass 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
Practice Questions
Question: 8
Page: 147
Difficulty: easy
The $2 pens are cheaper, so see if we can maximize the number of $2 pens we can buy.
If we buy 12 $2 pens, we will spend $24
So, EITHER the correct answer is D (12) OR it's possible to by even more than 12 pens.
HOWEVER, when we check the answer choices, we see that there's only one answer choice bigger than 12, and that answer choices is 20
Since there no ways to buy 20 pens for $25, the correct answer must be D
Cheers,
Brent
_________________
Brent Hanneson - founder of Greenlight Test Prep