All Exams: Quantitative Aptitude — Simplification & Approximation (20 Practice MCQs)

Practice 20 carefully selected MCQs on Simplification & Approximation for the All Exams exam. Each question includes a detailed explanation to help you understand the concept, not just memorise the answer.

Difficulty: Medium | Exam Year: 2026 | Time suggested: 20 minutes

Q1. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q2. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q3. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q4. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q5. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q6. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q7. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q8. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q9. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q10. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q11. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q12. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q13. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q14. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q15. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q16. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q17. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q18. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Q19. A train travels 360 km in 4 hours. What is its speed in km/h?

  • A. 80
  • B. 90
  • C. 72
  • D. 100
Explanation: Speed = Distance/Time = 360/4 = 90 km/h.

Q20. Simple interest on ₹2000 at 5% per annum for 3 years is:

  • A. ₹300
  • B. ₹200
  • C. ₹350
  • D. ₹400
Explanation: SI = PRT/100 = 2000×5×3/100 = ₹300.

Answer Summary

Review all explanations carefully. For wrong answers, go back to the concept guide for Simplification & Approximation and revise the relevant shortcut or rule.