Instructions

For the following questions answer them individually

Question 41

If the cost price of 20 articles is equal to the selling price of 25 articles, then the

percentage profit or loss made is_______.

Question 42

There are some benches and some students in a classroom. If one student sits on one

bench, 10 students will be left without a bench. If two students sit on a bench, 10

benches will have no students sitting on them. What is the ratio of students and

benches in the class room?

Question 44

In a national park 150 tigers were caught, tagged with electronic markers, then released. A week later, 50 tigers were captured in the same national park. Of these 50 tigers, it was found that 5 had been tagged with the electronic markers. If the percentage of tagged tigers in the second sample approximates the percentage of tagged tigers in the national park, and if no tiger had either left or entered the national park over the preceding week, what is the approximate number of tigers in the national park?

Question 45

The incomes of two persons is in the ratio of 9:7 and their expenditures is in the ratio of 4:3. If each of them manages to save Rs. 3000 per month, find the difference in their income.

Question 46

Present ages of Shibu and Sohail are in the ratio of 4:5. Eight years from now the ratio of their ages will be 5:6. Find the difference in their ages?

Question 48

Four different clocks beep after every 25 minutes, 50 minutes, 1 hour 40 minutes and 2 hour 5 minutes. If all clocks beep together at 5 a.m., then when will they next beep together?

Question 49

A tree bends due to heavy storm and now its peak touches the ground making an angle of $$30^{\circ}$$ with it. If the bent part is 20 metre long, find the original height of the tree in metres.

Question 50

The following observations are arranged in ascending order: 26, 29, 42, 53, X, X+2, X+5, 75, 82, 93: If the median is 65; Find the value of X.

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