Points and Total Deduction

Question

Brett took a test in which 2 points were earned for each correct response and -1/2 point was earned for each incorrect response. He answered 35 questions correctly and 15 questions incorrectly, so his total number of points was 35(2) + [-1/2(15)]. Which is another way to write Brett’s total number of points on the test?

 

A - 15(2) + [ -1/2 (35) ]

 

B - 15(2) + 1/2 (35)

 

C - 35(2) - [ -1/2 (15) ]

 

D- 35(2) - 1/2 (15)

 

Many Thanks.

Answer 1

D because with all of the other choices you have have a +7 1/2.  

and 15 x 1/2 =7 1/2,

so 70-7 1/2= 62 1/2