Chapter Exam

Chapter-9 Percentage and Simple Interest — Online MCQ Test

Q: What is 25% of 200?

Answer: B. 50 — 25% means 25 out of 100. So, 25% of 200 = 25/100 × 200 = 50.

Q: Which of the following is the correct formula for simple interest?

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.

Q: A student scored 45 marks out of 60. What is the percentage of marks obtained?

Answer: C. 75% — Percentage = (obtained marks / total marks) × 100 = (45/60) × 100 = 75%.

Q: A number is increased from 120 to 150. What is the percentage increase?

Answer: B. 25% — Increase = 150 - 120 = 30. Percentage increase = (30/120) × 100 = 25%.

Q: Which of the following values is equal to 7.5%?

Answer: A. 0.075 — To convert percentage to decimal, divide by 100. So, 7.5% = 7.5/100 = 0.075.

MATHS · Samacheer Kalvi 8th · Tamil Nadu State Board

Practice Chapter-9 Percentage and Simple Interest with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 8th MATHS. 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.

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Chapter-9 Percentage and Simple Interest — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 8th MATHS — Chapter-9 Percentage and Simple Interest, with answers and explanations. These are sample questions; the exam has its own separate question set.

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.

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.

A student scored 45 marks out of 60. What is the percentage of marks obtained?