1. If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. upstream in 3 hr, Find the time taken by boat to cover 126 km downstream. (5)
- 1. 126/47 hr
- 2. 127/47 hr
- 3. 129/47 hr
- 4. 124/47 hr
- 5. None of these
2. Vipin can walk a certain distance in 52 days when he rests 10 hours a day. How long will he take for twice the distance, if he walks twice as fast and rests twice as long each day? (4)
- 1. 104 days
- 2. 26 days
- 3. 78 days
- 4. 182 days
- 5. 140 days
3. There is a hole in a water tank which can empty it in 8 hours. A pipe is opened which fills 6 litre water per minute in tank and now tank is emptied in 12 hours. What is the capacity of the tank? (3)
- 1. 8260 litre
- 2. 8660 litre
- 3. 8640 litre
- 4. 8620 litres
- 5. 8460 litres
4. Two pipes A and B can separately fill a cistern in 60 minutes and 75 minutes respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then then the cistern is full in 50 minutes. In how much time the third pipe alone can empty the cistern? (2)
- 1. 110 minutes
- 2. 100 minutes
- 3. 120 minutes
- 4. 90 minutes
- 5.130 minutes
5. The difference between simple interest and compound interest of a certain sum of money at 20% per annum for 2 years is Rs. 48. Then the sum is: (2)
- 1. Rs. 1,000
- 2. Rs. 1,200
- 3. Rs. 1,500
- 4. Rs. 2,000
- 5. Rs. 2,500