Question

A person bought 32 L of water for the football game and he divided the water equally into 8 coolers. Find the quantity of water in each of the coolers by converting it into milliliters?
(a) 40 mL
(b) 400 mL
(c) 4000 mL
(d) 40000 mL

Answer 1

Hint: First of all we are dividing 32 L of water into 8 equal parts by dividing 32 to 8. After division, we got the water in litres but we are asked to find the quantity of water in milliliters so we have to convert litres into milliliters by using the conversion of litres (L) to millilitres (mL) $1\text{L}=1000\text{mL}$. Now, multiplying the result of the division by 1000 we will get the quantity of water in milliliters.

Complete step-by-step answer:
It is given that a person bought 32 L of water so dividing this water into 8 coolers which we are going to do by dividing 32 L by 8.
The quantity of water in each cooler is equal to:
$\dfrac{32}{8}L$
In the above expression, 8 is dividing 32 by 4 times so the above expression will look like:
$4L$
We are asked in the above question to find each quantity of water in milliliters so we are using the following conversion to convert litres into milliliters.
$1\text{L}=1000\text{mL}$
The volume in milliliters for 4L is the multiplication of above expression by 4.
$\begin{align}
  & \left( 1 \right)\text{4L}=\left( 1000 \right)\text{4mL} \\
 & \Rightarrow \text{4L}=\text{4000mL} \\
\end{align}$
From the above, we have calculated the quantity of water in each cooler is equal to 4000mL.
Hence, the correct option is (c).

Note: The question is pretty simple so the mistakes that could happen is the calculation mistakes like in the division and multiplication. And in counting the number of zeros also usually solving such questions in the last minutes rush you will make the mistake in counting the zeros in the answer and then do the mistake in marking the option.