Chapter-9 Percentage and Simple Interest — Online MCQ Test
MATHS · Samacheer Kalvi 8th · Tamil Nadu State Board
Practice Chapter-9 Percentage and Simple Interest with a free chapter-wise online MCQ test.
This chapter covers: percentage interest profit loss Covers percentage simple interest and real life financial applications.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-9 Percentage and Simple Interest — Important Questions & Answers
What is 25% of 200?
- A. 25
- B. 50
- C. 75
- D. 100
Answer: B. 50
25% means 25 out of 100. So, 25% of 200 = 25/100 × 200 = 50.
25% means 25 out of 100. So, 25% of 200 = 25/100 × 200 = 50.
Which of the following is the correct formula for simple interest?
- A. SI = P × R × T / 100
- B. SI = P + R + T
- C. SI = P / R × T
- D. SI = P × T / R
Answer: A. SI = P × R × T / 100
Simple interest is calculated using the formula SI = (P × R × T) / 100, where P is principal, R is rate, and T is time.
Simple interest is calculated using the formula SI = (P × R × T) / 100, where P is principal, R is rate, and T is time.
A student scored 45 marks out of 60. What is the percentage of marks obtained?
- A. 65%
- B. 70%
- C. 75%
- D. 80%
Answer: C. 75%
Percentage = (obtained marks / total marks) × 100 = (45/60) × 100 = 75%.
Percentage = (obtained marks / total marks) × 100 = (45/60) × 100 = 75%.
A number is increased from 120 to 150. What is the percentage increase?
- A. 20%
- B. 25%
- C. 30%
- D. 35%
Answer: B. 25%
Increase = 150 - 120 = 30. Percentage increase = (30/120) × 100 = 25%.
Increase = 150 - 120 = 30. Percentage increase = (30/120) × 100 = 25%.
Which of the following values is equal to 7.5%?
- A. 0.075
- B. 0.75
- C. 7.05
- D. 75
Answer: A. 0.075
To convert percentage to decimal, divide by 100. So, 7.5% = 7.5/100 = 0.075.
To convert percentage to decimal, divide by 100. So, 7.5% = 7.5/100 = 0.075.