Ratio and proportion math

by J. Doe
(N. Carolina)

On Free practice test #4, Question #8 - I need help with this question:

Two solutions are combined in a 3:1 ratio to make a custom compounded solution. How many of each is required to make 200mL of this mixture?

A. 125mL : 75mL
B. 210mL : 90mL
C. 120mL : 80mL
D. 150mL : 50mL


Comments for Ratio and proportion math

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question 8 to quiz 4
by: Anonymous

3:1 ratio making 200 mL
total is 4
3x200/4= 150 mL
1x200/4= 50 mL
Answer is D

I hope this helps

Answer
by: Anonymous

150:50

Quiz 4 question 8
by: Anonymous

3+1= 4
200/4=50
50x3=150
50x1=50
Answer: 150:50

another tip
by: Johnson Meloottu CPhT

we can ignore answer b right away. Total ml is 300 in those answer.

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