Question

Ashu had \[24\] pages to write. By the evening, he had completed \[25\% \] of his work. How many pages were left?

Answer 1

Hint: To solve this question, we will start with taking a total number of pages. Then the number of pages that Ashu had already written, as in the question mentioned that he had completed \[25\% \] of his work. After that when we subtract pages already written from the total number of pages, we will get the number of pages which are still left to be written.

Complete step-by-step answer:
We have been given that Ashu had \[24\] pages to write. And by the evening, he had completed \[25\% \] of his work. We are asked to find how many pages are left for him to write.
Total number of pages \[ = {\text{ }}24\]
Number of pages completed by evening, i.e., \[25\% \]of his work$ = \dfrac{{25}}{{100}} \times 24$
$ = 6$
Number of pages left \[ = \] total number of pages \[-\] number of pages already written.
So, number of pages left \[ = {\text{ }}24{\text{ }}-{\text{ }}6{\text{ }} = {\text{ }}18\]
Thus, \[18\] pages were left to be written by Ashu.

Note: Alternate method of solving this question is by assuming the number of pages to be x. On solving this way, we will get a linear equation, then afterwards we can get our required answer.
Let the number of pages left to be x.
Total number of pages \[ = {\text{ }}24\]
Number of pages completed by evening $ = \dfrac{{25}}{{100}} \times 24$
Now, after putting the values, and we will therefore make a linear equation, we get
x $ = 24 - \dfrac{{25}}{{100}} \times 24$
x \[ = {\text{ }}18\]
Thus, the number of pages were left to be written by Ashu is \[18.\]