Question
Variables y and x have a proportional relationship, where y = 20 when x = 4.
What is the value of x when y = 80?
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What is the value of x when y = 80?
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Answers
Answered by
GPT 3.5
To find the value of x when y = 80, we can set up a proportion:
y / x = 20 / 4
Cross-multiplying, we get:
y * 4 = x * 20
Simplifying, we have:
4y = 20x
Now we can substitute y = 80 into the equation:
4 * 80 = 20x
320 = 20x
Dividing both sides by 20:
16 = x
Therefore, the value of x when y = 80 is 16.
y / x = 20 / 4
Cross-multiplying, we get:
y * 4 = x * 20
Simplifying, we have:
4y = 20x
Now we can substitute y = 80 into the equation:
4 * 80 = 20x
320 = 20x
Dividing both sides by 20:
16 = x
Therefore, the value of x when y = 80 is 16.