Question

as a medical researcher, you are responsible for entering clinical data into a database. a subject’s 1, 600 - milliliter fluid sample contains 0.2 gram of glucose. what is the concentration, in milligrams, of glucose per 100 milliliters of fluid?
a 1.25
b 12.5
c 80
d 320
e 500

Explanation:

Step1: Convert grams to milligrams

We know that 1 gram = 1000 milligrams. So, 0.2 grams is equal to \(0.2\times1000 = 200\) milligrams.

Step2: Find concentration per 100 milliliters

The sample is 1600 milliliters with 200 milligrams of glucose. We want to find the amount in 100 milliliters. Let \(x\) be the amount in milligrams for 100 milliliters. We set up a proportion: \(\frac{200}{1600}=\frac{x}{100}\). Cross - multiplying gives \(1600x = 200\times100\). Then \(x=\frac{200\times100}{1600}=\frac{20000}{1600}=12.5\).

Answer:

B. 12.5