Question

Kamal has to fill the same measuring cup 8 times to get 2 litres of water. How many millilitres of water does the cup hold?

Answer 1

Hint: This question is from the topic of pre-algebra. This question belongs to the chapter ratio and proportions. In this question, first we will get to know how many millilitres contain 1 litre. After that, we will convert 2 litres into millilitres. After that, we will use the ratio and proportion method to get the capacity of the cup.

Complete step by step answer:
Let us solve this question.
The question is asked to find the capacity of the cup in millilitres if Kamal will fill the same measuring cup 8 times to get 2 litres of water.
Before solving this question, let us know one thing that 1 litre is always equal to 1000 millilitres.
So, we can say 2 litres will be equal to 2000 millilitres.
So, Kamal will fill the cup 8 times which measures equal volumes.
Let the volume or the capacity of the cup be x.
Hence, we can say that 8 times of x will be 2 litres or 2000 millilitres.
Therefore, we can write
\[8\times x=2000millilitres\]
Using ratios and proportions, the above equation can also be written as
\[\Rightarrow x=\dfrac{2000}{8}millilitres\]
If we divide 2000 by 8, we get 250.
Hence, the value of x will be 250 millilitres.

Note:
We should have a better knowledge in the topic pre-algebra for solving this type of question. We should know how to use ratio and proportions. We can solve this question in a different way.
Let us solve this question by different methods.
Using 8 cups, we can fill 2 litres of 2000 millilitres.
Or, we can say
For 8 cups, we get the volume of 2000 millilitres.
For 1 cup, we get the volume of \[\dfrac{2000}{8}\] millilitres that will be 250 millilitres.