Quantitative Aptitude - MCQ Practice Questions

A 400 m long train is running at 72 km/h. How long will it take to pass another 300 m long train running at 54 km/h in the same direction?

A sum becomes ₹1331 after 3 years at 10% per annum compound interest. What was the principal?

A merchant marks his goods 40% above the cost price. What discount percent should he give to gain 12%?

Two pipes fill a tank. Pipe A fills it in 20 hours, Pipe B in 30 hours. If both work for 6 hours and then B stops, how long for A to finish?