Question

The recommended single dose for a particular drug is 100 mg. How many doses can be obtained from 20 grams of the drug?

A. 2,000 doses
B. 200 doses
C. 2 doses
D. 20 doses

Answer 1

B. 200 doses

Explanation:

Given,

1 dose is required for 100 mg,

Since, 1 mg = 0.001 g,

⇒ 100 mg = 0.1 g

⇒ 1 dost is required for 0.1 g,

Thus, the ratio of doses and quantity ( in gram ) is
`(1)/(0.1)=10`

Let x be the doses required for 20 grams,

So, the ratio of doses and quantity is
`(x)/(20)`

`\implies (x)/(20)=10`

`\implies x=200`

Hence, 200 doses can be obtained from 20 grams of the drug.

Option 'B' is correct.