Question

A bottle of root beer contains $${\displaystyle \frac{4}{5}}$$ of a litre. How much root beer is in 3 bottles?

Answer 1

Hint: In this problem, we are given that one bottle of root beer contains $${\displaystyle \frac{4}{5}}$$ of a litre. We have to find how much 3 bottles contains. We know that one bottle contains $${\displaystyle \frac{4}{5}}$$ of a litre, then 3 bottles should have multiplication of 3 and $${\displaystyle \frac{4}{5}}$$ of a litre. We should just multiply 3 and the given litre to find the answer.

Complete step by step answer:
We know that a bottle contains $${\displaystyle \frac{4}{5}}$$ of a litre.
Given that,
Quantity of root beer in one bottle = $${\displaystyle \frac{4}{5}}$$ litres.
We have to find the quantity of water in three bottles.
Quantity of root beer in three bottles $$={\displaystyle \frac{4}{5}}\times 3$$
We can now multiply the above step, we get
Quantity of root beer in three bottles $$={\displaystyle \frac{12}{5}}$$
We can now convert the fraction into decimal, we get
Quantity of root beer I three bottles $$=2.4$$litres.

Therefore, 3 bottles contain 2.4litres of root beer.

Note: Students make mistakes while converting the fraction into its decimal, which should be divided in a proper manner. We should know that, if quantity of one thing is given and asked for a number of things, we should just multiply the given quantity to the number of things given. We can also convert the given litres in fraction to decimal and we can further multiply the number of bottles to get the same answer.