Mixtures proportions Ratio GMAT Data Sufficiency Level 500 600
A solution is made up of two substances A and B, how much per thousand is substance A in the solution?
1) 20 liters of solution contain 20 cc of substance B
2) In the solution there are for every 200 of A, 4000 of B
A) only 1
B) only 2
C) Both together
D) Each one by itself
E) Additional information is required.
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