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The average of 5, 10, 15, and z is 20. What is z?
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5 votes
The average of 5, 10, 15, and z is 20. What is z?

User Steen Harsted
by
4.5k points

2 Answers

3 votes

Answer:

z is 20

Explanation:

User Thewhiteambit
by
4.5k points
6 votes

Answer:

50

Explanation:

Step 1:

5 + 10 + 15 + z / 4 = 20 Equation

Step 2:

30 + z / 4 = 20 Combine Like Terms

Step 3:

30 + z = 20 × 4 Multiply 4 on both sides

Step 4:

z = 80 - 30 Subtract 30 on both sides

Answer:

z = 50

Hope This Helps :)

User Cgaspoz
by
4.1k points
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