Question

one of the tests a student took consisted of 3 points with several problems each. the grade was calculated according to the following scale:

part	weight
part b	40%
part c	40%

the student earned 75/100 on part a, 95/100 on part b, and 85/100 on part c.
find their overall grade for the exam as a percent.
○ 85%
○ 83%
○ 87%
○ 89%

Explanation:

Step1: Calculate Part A contribution

$75 \times 0.20 = 15$

Step2: Calculate Part B contribution

$95 \times 0.40 = 38$

Step3: Calculate Part C contribution

$85 \times 0.40 = 34$

Step4: Sum contributions for total grade

$15 + 38 + 34 = 87$

Answer:

C. 87%