Directions: Study the following table carefully and answer the following questions Out of 100  80 and above 60 and above 40 and above 20 and above 0 and above Mathematics 17 38

Directions: Study the following table carefully and answer the following questions

Out of 100	80 and above	60 and above	40 and above	20 and above	0 and above
Mathematics	17	38	93	112	150
Physics	8	30	46	108	150
Aggregate	13	34	81	110	150

Percentage of number of students getting at least 80% marks in mathematics over those getting at least 60% marks in aggregate is
1). 50%
2). 45%
3). 60%
4). 30%

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1. The marked price of a book is 20% more than the cost price. After the book is sold, the vendor realizes that the he had wrongly raised the cost price by a margin of 25%. If the marked price of the book is Rs. 30, what is the original cost price of the book?

2. What approximate value should come in place of question mark ‘?’ in the following question? 17.977 × 5.123 - 10.02 + 55.999 - 18.2111 ÷ 6.0007 = ?

3. What value should come in place of question mark (?) in the following question? 47% of 600 + ?% of 300 = 399

4. Directions: Each question below is followed by two statements I and II. You have to determine whether the data given in the statement is sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answer. How long will it take for two pipes A and B to fill an empty cistern if they worked alternately for an hour each? I. Working alone, Pipe A can fill the cistern in 60 hours II. Pipe B is one third as efficient as Pipe A

5. Zinc and copper are in the ratio of 5 : 3 in 400 gram of an alloy. How much gram of copper should be added to make the ratio of zinc to copper as 3 : 5?

6. 80% milk solution is mixed with 30% milk solution to produce 45 liter of 50% milk solution. If the price of 45 liter of 50% milk solution is Rs.1,080 and the price of 30% milk solution is Rs. 20 per liter, then what is the price of 80% milk solution in the final mixture?

7. What will come in place of question mark ‘?’ in the following question? 3/4 of (470 + 18) + 5/6 of 360 = 111 × √?

8. A boat sails downstream 50 km in 2 hours and maintains a speed of 10 km/h while travelling upstream. Find the speed of the boat in still water.

9. Shubham took a loan of Rs. 250000 with simple interest for as many years as the rate of interest. If he paid Rs. 10000 as interest at the end of the loan period, what was the rate of interest for him?

10. A pipe can empty a tank in 40 minutes. A second pipe with diameter twice as much that of the first is also attached with the tank to empty it. The two together can empty the tank in