A chemical engineer has tested 56 water samples. These samples make up 25% of the total number of samples that need testing.

Question

Select from the drop-down menu to correctly identify the total number of water samples that need testing.



There are a total of Choose...water samples to be tested.

Answer 1

To find the total number of water samples that need testing, you can set up the equation based on the information given:

Let \( x \) be the total number of water samples. According to the problem, 25% of \( x \) equals 56 samples.

This can be expressed as the equation:

\[ 0.25x = 56 \]

To find \( x \), divide both sides of the equation by 0.25:

\[ x = \frac{56}{0.25} \]

Calculating that gives:

\[ x = 56 \times 4 = 224 \]

Therefore, there are a total of 224 water samples to be tested.