Question
In Tia class, 70% of the students completed an essay by the due date. There are 30 students in Tia class. How many completed the essay by the due date.
- 12
- 15
- 21
- 25
Hint:
1. When a certain quantity is divided into 100 equal parts and a certain part of it is to be expressed in terms of the whole quantity, that portion is called as a percent, represented with a % sign.
2. Percentage students who completed essay by due date = number of students who completed essay by due date / Total students * 100.
The correct answer is: 21
Given-
Percentage students who completed essay by due date = 70%
Total students = 30
To find-
Number of students who completed essay by due date
Solution-
We know that-
Percentage students who completed essay by due date = number of students who completed essay by due date / Total students * 100
∴ 70 = number of students who completed essay by due date / 30 * 100
∴ 70 * 30 / 100 = number of students who completed essay by due date
∴ 21 = number of students who completed essay by due date
Final Answer- Option 'c' i.e. '21' is the correct answer to the given question.
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