A tank is filled in 5 hours by three pipes, A, B, and C. If C is twice as fast as B, find the total time. A. 20 hrs B. 25 hrs C. 35 hrs D. Cannot be determined Explanation: Solve rate equations.
Three pipes fill a tank. The first two together take 15 houRs. Find total time. A. 6 hrs B. 10 hrs C. 15 hrs D. 30 hrs Explanation: Combined rate leads to 15 houRs.
A tank is 7 m long and 4 m wide. What speed is needed for water flow? A. 12 km/hr B. 10 km/hr C. 14 km/hr D. None Explanation: Flow rate derived from volume/time.
A tank can be filled by one pipe in 20 min and another in 60 min. Together they fill in ____. A. 10 min B. 20 min C. 30 min D. 40 min Explanation: Combined rate = 1/15 ⇒ 20 min (given option logic).
A tank 3 m long, 2 m wide, and 1.5 m deep is dug. If soil is spread over a field, what is the rise in level? A. 0.299 cm B. 0.29 cm C. 2.98 cm D. 4.15 cm Explanation: Volume ÷ field area.
A swimming pool is 24 m long and 15 m broad. How many men are required to complete the work? A. 32 B. 36 C. 42 D. 46 Explanation: Work is proportional to area and rate.
A sum is divided among A, B, C, and D in the ratio 5:2:4:3. If C gets Rs. 1000 more than D, what is the total sum? A. Rs. 500 B. Rs. 1500 C. Rs. 2000 D. None Explanation: Difference corresponds to ratio units.
A sum at simple interest for 3 years becomes Rs. 6000. What is the principal? A. Rs. 4000 B. Rs. 9000 C. Rs. 5000 D. Rs. 6000 Explanation: The given amount corresponds directly.
A sum at simple interest for 2 years becomes Rs. 750. What is the principal? A. Rs. 750 B. Rs. 700 C. Rs. 820 D. Rs. 940 Explanation: Direct relation from the given condition.
A sum is put at simple interest for 2 years. If compounded annually, it becomes Rs. 750. What is the original sum? A. Rs. 750 B. Rs. 700 C. Rs. 940 D. Rs. 820 Explanation: Equal amounts indicate no compounding effect.