A bottle of liquid medication contains 300mL and costs $10.00. If the usual dose is 20mL, how much does each dose cost?

Question

The topic goes on to a part b) stating if the usual dose is two tablespoons (1 tablespoon= 15 mL) how much does each dose cost?

Answer 1

If each bottle of liquid contains 300mL and if a dose is 20mL, how many doses are in the bottle? 300mL/20mL = 15 total doses. $10.00/15 doses = 0.667 or 66.7 cents per dose. Another way to do this problem would be to set up:

 

300mL    =   20mL

______        _____

$10.00             x

 

Solving for x should give you the same answer as above!

 

Try the same analysis for part B!