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Опрос |
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GMAT/Problem Solving
If 20 liters of chemical X are added to 80 liters of a mixture that is 10% chemical X and 90% chemical Y, then what percentage of the resulting mixture is chemical X?
А) ,15
В) ,28
С) 33 1/3%
D) ,4
Е) ,6
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| Решение |
В) ,28 |
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.250/.333 divided by .125/.167 is most nearly
А)10
В)5
С)1
D) .667
Е).500
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Вверх 
