Question 787692: In the election for the president of the senior assembly, 3/5 of the seniors voted for Alfredo, 3/10 for albert and 81 for alvin. How many seniors were there? Who was elected President of the class?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! In the election for the president of the senior assembly, 3/5 of the seniors voted for Alfredo, 3/10 for albert and 81 for alvin.
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Let the total # of seniors be "x":
[(3/5) + (3/10)]x = (9/10)x
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So, (1/10)x = 81
x = 810 (# of seniors)
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Alfredo votes: (3/5)810 = 3*162 = 300+180+6 = 486
Albert votes: (3/10)810 = 3*81 = 240+3 = 243
Alvin votes: 81
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Cheers,
Stan H.
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