Question

Certain volume of water is needed to wash biodiesel. This is represented by the equation y = 4.25 x, where y is the volume of diesel in liters and x is the volume of water required in liters. What is the value of x, when y is 21.25 liters?

• A. 5 liters
• B. 4 liters
• C. 3 liters
• D. 10 liters

Answer 1

The correct option is A 5 liters

The given equation is y = 4.25x

Given, y =21.25 liters

Therefore, 21.25 = 4.25 x

x = $\frac{21.25}{4.25}$


$$\begin{array}{c}5\\ 4252125\\ -\underset{–}{2125}-2\\ 0\end{array}$$
Hence, the volume of water needed is 5 liters.