Questions on Algebra: Percentage and Pie Charts answered by real tutors!

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Question 151527: what percent of 400 is 320: what percent of 400 is 320
Answer by jim_thompson5910(9421) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=unknown percentage in decimal form


So "what percent of 400 is 320", translates to x*400=320 which could also look like 400x=320


x=(320)/(400) Divide both sides by 400 to isolate x.


x=4/5 Reduce.


x=0.8 Convert the fraction to decimal form.


Now multiply 0.8 and 100 to get 0.8*100=80


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Answer:


So the unknown percentage is 80%