Quantitative Aptitude

Q1. Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both pipes are opened together, the time taken to fill the tank is: a) 50 minutes b) 12 minutes c) 25 minutes d) 15 minutes

Q2. A swimming pool has 3 drain pipes. The first two pipes A and B, operating simultaneously, can empty the pool in half the time C, the 3rd pipe, alone takes to empty it. Pipe A working alone, takes half the time taken by pipe B. Together they take 6 hours 40 minutes to empty the pool. Time taken by pipe A to empty the pool, in hours is a) 15 b) 10 c) 30 d) 7 Q3. The percentage of loss when an article is sold at rs 50 is the as that of the profit when it is sold at Rs 70. The above mentioned percentage of profit or loss on the article is a) 10% b) 50/3% c) 20% d) 68/3% Q4. A man had 100 kgs of sugar part of which he sold at 7% profit and rest at 17% profit. He gained 10% on the whole. How much did he sell at 7% profit? a) 65 kg b) 35 kg c) 30 kg d) 70 kg Q5. A shopkeeper lists the price of an article as Rs 500. But he gives a certain discount which allows a certain discount which allows the buyer to pay Rs 500 for the article including 10% sales tax. The rate of discount is a) 10% b) 111/115% c) 100/11% d) 11% Q6. A trader allows a trade discount of 20% and a cash discount of 26/4% on the marked price of the goods and gets a net gain of 205 of the cost. By how much above the cost should the goods be marked for the sale? a) 40% b) 50% c) 60% d) 70% Q7. A sum of money invested at compound interest amount to Rs 650 at the end of first year and Rs 676 at the end of second year. The sum of money is: a) Rs 6000 b) RS 5400 c) Rs 6250 d) Rs 5600 Q8. A loan of Rs 12300 at 5% per annum compound interest, is to be repaid in two equal annual instalments at the end of every year. Find the amount of each instalment. a) RS 6651 b) Rs 6615 c) Rs 6516 d) RS 6156 Q9. A shopkeeper bought 15 kg of rice at the rate of Rs 29 per kg and 25 kg of rice at the rate of rs 20 per kg. He sold the mixture of both types of rice at the rate of Rs 27 per kg. His profit in this transaction is a) Rs 125 b) Rs 150 c) Rs 140 d) Rs 145 Q10. A container contains 60 kg of milk. From this container 6 kg of milk was taken out and replaced by water. This process was repeated further two times. The amount of milk left in the container is a) 34.24 kg b) 39.64 kg c) 43.74 kg d) 47.64 kg Answer Key: 1.b 2.a 3.b 4.d 5.c 6.c 7.c 8.b 9.d 10.c