Vitamin doses

Children and adults take the recommended daily dose of vitamins throughout the year. According to the package insert, the recommended daily dose for a child is half that of an adult. Two adults together consume one pack of vitamins in 30 days.
How many days will it take for two adults and one child together to consume one pack of vitamins?

Final Answer:

t =  24

Step-by-step explanation:

x=2 30=60 y=2 x=2 60=120  t (2/x+1/y)=1  t=2/x+1/y1=2/60+1/1201=24



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