Question

CAN SOMEONE HELP ME !!!!!!!!!

Answer 1

She will get 80mg of dextromethorphan and 800mg of guaifenesin. And the bottle last for 6 days approximately.

Explanation:

Given that the Robitussin DM contains dextromethorphan 10mg/5mL and gualfenesin 100mg/5mL. And we are also given that Mrs Smith took four doses and each dose is 2 teaspoons=2X5=10mL.

So, four doses=4X10=40mL.

So, dextromethorphan in 4 doses is =
`(10)/(5)X40=80mg`

And Guaifenesin in 4 doses is =
`(100)/(5)X40=800mg`

Dosage of medicine daily she has to take=40mL and the bottle contains 237 mL. Hence the number of days bottle last =
`(237)/(40)=5.925`≈6 days approximately.