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1. |
A liquid solid mixture with 10% solid and 90% liquid is input to a dryer, some of the liquid evaporated and the product contains 60% solid and 40% liquid, what is the ratio of amount of water evaporated and amount of input? |
A. | 2:1 |
B. | 3:2 |
C. | 5:4 |
D. | 6:5 |
Answer» E. | |