1 year ago

A list of 8 numbers has a mean of 6. work out the total of the numbers.

Mathematics

1 answer:

VARVARA [1.3K]1 year ago

8 0

Answer:

Step-by-step explanation:

The mean of a number is the sum of all the numbers divided by how many numbers there are. We can set up this formula: $mean = \frac{sum}{amountnumbers}$ .

When we plug our values into this equation, we get: $6 = \frac{sum}{8}$ . Solving this equation gets us sum = 6 * 8 = 48

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Let x = adult tickets
Let y = children's tickets

x + y = 800
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From the first eq, x = 800 - y, plug this in to the second eq
8(800-y) + 4y = 4,400
6400 - 8y + 4y = 4,400
2000 = 4y
500 = y

x = 800 - 500
x = 300

300 adult tickets were sold.

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