Question

You have \[30L\] of a liquid. How many gallons is this?

Answer 1

Hint: We need to convert Litres to Gallons, as we know the relation between litres and gallons so from that we first calculate the number of gallons in-unit Litre or \[1\] litre then multiply it with \[30\] as we have to convert \[30L\] to gallons.

Complete step by step solution:
It is given that a liquid of \[30L\]
We just need to convert this litre to gallons
Since we know that,
\[1gallon=3.785L\]
From the above relation, we can calculate the gallons in-unit litre
\[1L=\dfrac{1}{3.785}gallon\]
\[\Rightarrow 1L=0.264gallon\]
Now we have to convert \[30L\] to gallons
\[\Rightarrow 30L=30\times 0.264gallons\]
\[\Rightarrow 30L=7.92gallons\]

Thus, there are \[7.92gallons\] in \[30L\].

Note:
When we have to convert the quantity from one unit to another then we just use the unitary method that first calculate the for the unit quantity from the relation we have already known then just multiply this unit conversion for one unit quantity with the given quantity that we want to convert, means similarly in this question we first calculated the gallons in-unit litre then multiplied it with \[30\].