Posted by Carrie on Saturday, June 14, 2008 at 3:14pm.
Lindsey has 75% as her final grade, but after she writes her exam she gets 85%.
If her exam is worth 7.5%, what is her final grade.

Problem Solving  Ms. Sue, Saturday, June 14, 2008 at 5:02pm
Multiply 75 by 0.925.
Multiply 85 by 0.075.
Add the two products together to get her final grade.

Problem Solving  Carrie, Saturday, June 14, 2008 at 5:13pm
Thanks but,I don't understand, because
75x0.925= 69.375
85x0.075= 6.375
69.375 + 6.375= 75
How can that be right? Where did you get 0.925 from. Isn't her final grade going to go up after her 85% on the exam.

Problem Solving  Ms. Sue, Saturday, June 14, 2008 at 5:23pm
I got the 0.925 by subtracting 0.075 from 1.
By my calculations, the grade only goes up from 75 to 75.75. Rounded to the nearest percent = 75.75 = 76. A final grade of 76% makes sense because the exam is only a small part of the final grade.
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