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OpenStudy (anonymous):
If x/0.5 + y/0.2 = 18, where x and y are positive integers, then what is the value of x ?
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OpenStudy (kagıtucak):
2x+5y=18 If y=1 2x=13 x=6.5 not an integer If y=2 2x=8 x=4 (correct answer) If y=3 2x=3 x=1.5 not an integer Thus x=4 is our answer
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