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Darina [25.2K]
4 years ago
9

In a certain school, course grades range from 0 to 100. Adrianna took 4 courses and her average course grade was 90. Roberto too

k 5 courses. If both students have the same sum of course grades, what was Roberto's average?
Mathematics
2 answers:
Leto [7]4 years ago
5 0

Answer: Average if 9 courses is 40.

Step-by-step explanation:

Since we have given that

Number of courses = 4

Average of 4 courses = 90

We need to find the average of 9 courses.

Let the average of 9 courses be x.

According to the question, we get that

4 × 90 = 9 × x

360 = 9x

x = 360 ÷ 9

x = 40

Hence, average if 9 courses is 40.

Alexandra [31]4 years ago
3 0
72, because 360/4 courses = 90 as an average for Adrianna. This means that 360/5 courses equals 72 for roberto.
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Read 2 more answers
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katovenus [111]

Question is Incomplete, Complete question is given below.

Mr. Jablonski's class is making fudge for a bake sale. Mr. Jablonski

has a recipe that makes 3/4 pound of fudge. There are 21 students in

the class. Each student uses the recipe to make one batch of fudge.

How many pounds of fudge do the students make?

Answer:

student made \frac{63}{4} \ lbs \ OR \ 15 \frac{3}{4}\ lbs \ OR \ 15.75\ lbs of fudge.

Step-by-step explanation:

Given:

Mr. Jablonski  recipe makes 3/4 pound of fudge.

Number of student in class = 21 students.

Each student uses the recipe to make one batch of fudge.

Hence to calculate Total amount of fudge student made we will multiply the amount of fudge used in recipe with Number of students.

Total amount of fudge student made = amount of fudge used in recipe × Number of students.

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Hence the student made \frac{63}{4} \ lbs \ OR \ 15 \frac{3}{4}\ lbs \ OR \ 15.75\ lbs of fudge.

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