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gregori [183]
3 years ago
11

Anna has the following averages in his math class.

Mathematics
1 answer:
LekaFEV [45]3 years ago
7 0

Answer:

b) 91

Step-by-step explanation:

<u>Step 1: Multiple marks by its weights</u>

<em>Homework average:</em> 95 x 20% = 19

<em>Quiz average: </em>90 x 20% = 18

<em>Test average:</em> 87 x 40% = 34.8

<em>Final exam:</em> y x 20% = 0.2y

<u>Step 2: Add all weighted averages and find y</u>

19+18+34.8+0.2y = 90

71.8 + 0.2y = 90

y = 18.2/0.2

y = 91

Therefore, Anna needs to score minimum 91 in the final exam so that she can score a 90 in class.

Option b is correct.

!!

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