Question

How many cups are in 2 gallons?

Answer 1

Hint: For this type of word problem, we use the unitary method to solve it. Firstly, we start to solve the question by finding out the number of cups that are in 1 gallon. Then we need to perform cross-multiplication as used in the unitary method and then we simplify the expression to get the number of cups in 2 gallons.

Complete step by step solution:
Gallon is used to measure the capacity of fluids or volume and is numerically equal to approximately 3.78541 litres.
Cups are used to measure for volume measurement of various fluids and are associated with cooking and serving sizes. It is approximately equal to 237 ml.
In the Unitary method, we first find out the price of the single unit of commodity and then find the price for the successive units by simply multiplying against the price of a single unit.
We know that,
1 gallon = 16 cups
Here we are told to find out no of cups in 2 gallons which can be written in a unitary form as,
1 gallon -- 16 cups
2 gallons --? cups
Here we perform cross multiplication to find out the number of cups in 2 gallons.
On cross multiplying we get,
$\Rightarrow {\displaystyle \frac{2\times 16}{1}}$ cups
$\Rightarrow 32$ cups
Therefore, there are 32 cups in 2 gallons.

Note: Here in our question, we have used the unitary method. While writing our values from the question in a unitary form, for simplification, always write the things to be calculated on the right-hand side and things known on the left-hand side. We can also use the ratio and proportion method to solve this question. Never forget to write the units of the quantity after the whole evaluation of the question. Units are what defines a quantity.