Question

A dozen people get on a train and five of them get off at the next stop. How many people are there left on the train?

Answer 1

Hint: First we need to know about the term ‘dozen’ and the quantity in number that it represents. Now, consider two points A and B. Here, point A will represent the stop where a dozen people get on the train and point B will represent the stop where five people get off. Subtract the number of people who get off from the number of people left on the train.

Complete step by step answer:
Here, we have been provided with the information that, at a stop a dozen people get on a train and at the next stop five people get off. We have been asked to determine the number of people left on the train.
Now, we know that in terms of quantity the term ‘dozen’ represents the number 12. So, a dozen is a collection of 12 articles. For example, if we say a dozen apples, that means we are considering 12 apples. If we will say like 2 dozens and 3 dozens apples then it would mean 24 apples and 36 apples respectively.
Now, let us consider two points A and B where point A represents the stop where these 12 people get on the train and point B as the stop where 5 people get off the train. So, we have,

Therefore, the number of people left on the train at point B will be given as: -
\[\Rightarrow \] Number of people left on the train = 12 – 5 = 7

Hence, 7 people are left on the train.

Note: One may note that without considering the quantity in number that is represented by a dozen we will not be able to solve the question. You must memorize these terms and the quantity represented by them. One more term you may be familiar with is a ‘quintal’ which represents the weight of any substance. One quintal measures 100kg. These terms are frequently used in chapters like ‘ratio and proportion’.