Question

A chemical engineer has tested 56 water samples. These samples make up 25% of the total number of samples that need testing. Select from the drop-down menu to correctly identify the total number of water samples that need testing. _____- There are a total of water samples to be tested. A: 1.4 B: 14 C: 168 D: 224

Answer 1

d.224 is your answer

Answer 2

The total number of water samples to be tested are 224 .

Option (D) is correct .

Explanation:

Formula

`Percentage = (Part\ value* 100)/(Total\ value)`

As given

A chemical engineer has tested 56 water samples.

These samples make up 25% of the total number of samples that need testing.

Part value = 56

Percentage = 25%

Put all the values in the formula

`25 = (56* 100)/(Total\ value)`

`25 = (5600)/(Total\ value)`

`Total\ value= (5600)/(25)`

Total value = 224

Therefore total number of water samples to be tested are 224 .

Option (D) is correct .