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Mathematics
Juliet Barry
31 May, 20:39
What is 80% of 30,863
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Marcelo
31 May, 22:17
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1. We assume, that the number 30863 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 30863 is 100%, so we can write it down as 30863=100%.
4. We know, that x is 80% of the output value, so we can write it down as x=80%.
5. Now we have two simple equations:
1) 30863=100%
2) x=80%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
30863/x=100%/80%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for what is 80% of 30863
30863/x=100/80
(30863/x) * x = (100/80) * x - we multiply both sides of the equation by x
30863=1.25*x - we divide both sides of the equation by (1.25) to get x
30863/1.25=x
24690.4=x
x=24690.4
now we have:
80% of 30863=24690.4
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