12%of72 is what number

Mathematics

1 answer:

bazaltina [42]2 years ago

3 0

Given:

A number 72.

To Find:

12% of 72.

Solution:

The given problem can be solved using the concepts of percentages and their applications.

1. The given number is 72.

2. x% of a number n is given by the formula,

=> x% of n = ,

3. x% of a number can also be defined as x parts of 100 multiplied by the given number.

4. 12% of 72 can be calculated using the above number,

=> 12% of 72 =

=> 0.12 x 72,

=> 864/100,

=> 8.64.

Therefore, 12% of 72 is 8.64

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MissTica

Answer:

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

Step-by-step 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 = $\frac{10}{5}X40=80mg$

And Guaifenesin in 4 doses is = $\frac{100}{5}X40=800mg$

Dosage of medicine daily she has to take=40mL and the bottle contains 237 mL. Hence the number of days bottle last = $\frac{237}{40}=5.925$ ≈6 days approximately.