Question

The price for 11 ballpoint pens is $11.77. Which of the following represents the same price per pen? A. 4 pens for $4.44 B. 5 pens for $6.05 C. 6 pens for $6.42 or D. 7 pens for 7.82

Answer 1

First you have to find out how much one pen costs. To do that, all you have to do is divide $11.77 by 11. So,
$11.77/11=$1.07
Then it's just trial and error from there in till you find one that matches. So,
A. 4*$1.07= $4.28( This one is wrong )
B. 5*$1.07= $5.35( This one is wrong )
C. 6*1.07= $6.42 ( !!This one is RIGHT!! )
D. 7*1.07= $7.49 ( This one is wrong )

Answer 2

First we need to know how much each pen costs.  So we take 11.77 and divide it by 11.  That gives us 1.07 per pen.  So answer choice A has 4 pens for 4.44, so we need to multiply 1.07 x 4.  That gives you 4.28, so we know that isn't the correct answer.  For option B, we need to multiply 1.07 x 5.  That is 5.35, so that also can't be the answer.  For C, we need to do 1.07 x 6, and that gives us 6.42.  So we know the correct answer is option C.