A number is increased by 20% and then decreased by 25%. The result is 36 less than the original. Find the original number. MCQ with Answer and Explanation

A number is increased by 20% and then decreased by 25%. The result is 36 less than the original. Find the original number.
A. 400
B. 360
C. 320
D. 300
Answer: Option B
Solution (By JKExamLibrary)
1.2 × 0.75 = 0.9. 0.9x = x - 36 → 0.1x = 36 → x = 360.

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Practice More Percentage Questions

Question #1
Student A gets 30% marks and fails by 15 marks. Student B gets 40% marks and gets 15 marks more than passing. What is the total marks?
A. 350
B. 400
C. 250
D. 300

Correct Answer: Option D


Explanation:
Difference in percentage = 40% - 30% = 10%. Difference in marks = 15 - (-15) = 30. 10% of Maximum = 30. Maximum = 300.

This question belongs to: Maths Percentage
Question #2
7/10 as a percent is:
A. 70%
B. 60%
C. 75%
D. 65%

Correct Answer: Option A


Explanation:
(7/10)×100 = 70%.

This question belongs to: Maths Percentage
Question #3
In a class consisting of 60 students and 5 teachers, each student receives sweets equal to 20% of the total number of students, and each teacher receives sweets equal to 30% of the total number of students. How many sweets were distributed in total?
A. 780
B. 810
C. 840
D. 900

Correct Answer: Option B


Explanation:
Sweets per student = 20% of 60 = 12. Sweets per teacher = 30% of 60 = 18. Total sweets = (60 * 12) + (5 * 18) = 720 + 90 = 810.

This question belongs to: Maths Percentage