For each color copy, Print Shop X charges $1.20 and Print Shop Y charges $1.70. How much greater is the charge for 40 color copies at Print Shop Y than at Print Shop X?	Choose the correct option.
A) $14 B) $16 C) $18 D) $20 E) $22
The difference in the two prices is $1.70 - $1.20 = $0.50 for each color copy.   Each color copy will cost an extra $0.50 at Print Shop Y.   40*$0.50 1.70 -  1.20= 
<gadget id="calculator">1.70 -  1.20</gadget>
<output>0.5</output>
$0.50 for each color copy.   Each color copy will cost an extra $0.50 at Print Shop Y.   40*$0.50 = $20   The answer is $20.40* 0.50= 
<gadget id="calculator">40* 0.50</gadget>
<output>20</output>
$20   The answer is $20.
<result>D</result>
For each color copy, Print Shop X charges $1.20 and Print Shop Y charges $1.70. How much greater is the charge for 40 color copies at Print Shop Y than at Print Shop X?