Question 268665
Tammy earned a total of $210 over 3 days. 
Each day she earned twice as much as she did on the previous day. 
How much did she earn on each of the 3 days?
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Let "x" be amount earned on day one
2x is the amount earned on day two
4x is amount earned on day three
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Equation:
x + 2x + 4x = 210
7x = 210
x = 30 (1st day
2x = 60 (2nd day
6x = 120 (3rd day
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Cheers,
Stan H.








I tried dividing by three and finding a number to double but came out wrong, and I don't want the last day to earn $210, I'm stuck!