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 )
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.
