Solve.A chemist needs 130 milliliters of a 77% solution but has only 67% and 80% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 30 ml of 67%; 100 ml of 80%
B. 100 ml of 67%; 30 ml of 80%
C. 35 ml of 67%; 95 ml of 80%
D. 35 ml of 67%; 100 ml of 80%
Answer: A
Mathematics
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A. 
= 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
+ 
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+ 
A. 
+ 
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+ 
C. 
D. 
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A. 
B. 
C. 
D. none of these
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