Difference between revisions of "2000 AMC 10 Problems/Problem 3"

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==Problem==
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#REDIRECT [[2000 AMC 12 Problems/Problem 3]]
 
 
Each day, Jenny ate <math>20\%</math> of the jellybeans that were in her jar at the beginning of that day. At the end of the second day, <math>32</math> remained. How many jellybeans were in the jar originally?
 
 
 
<math>\mathrm{(A)}\ 40 \qquad\mathrm{(B)}\ 50 \qquad\mathrm{(C)}\ 55 \qquad\mathrm{(D)}\ 60 \qquad\mathrm{(E)}\ 75</math>
 
 
 
==Solution==
 
 
 
<math>x(.8)(.8)=32</math>
 
 
 
<math>x(.64)=32</math>
 
 
 
<math>x \cdot \frac{32}{50}=32</math>
 
 
 
<math>x=50</math>
 
 
 
<math>\boxed{\text{B}}</math>
 
 
 
==See Also==
 
 
 
{{AMC10 box|year=2000|num-b=2|num-a=4}}
 

Latest revision as of 22:33, 26 November 2011