Delhi SI CPO Nov 25 Shift-2

Study the given histogram that shows the marks obtained by students in an examination and answer the question that follows

If the total marks obtained by students be represented as a pie chart, then the central angle of the sector representing marks 200 or more but less than 300, is: (correct to the nearest degree)

The speed ofa boatin still water is 15 km/h, and the speed of the current is 5 km/h. In how muchtime (in hours) willthe boat travel a distance of 60 km upstream and the same distance downstream?

If the volumeof a sphere is 4851 $$cm^{3}$$ then its surface area (in $$cm^{2}$$) is: (Take $$\pi = \frac{22}{7}$$)

If $$a^{2}+b^{2} =82$$ and ab=9, then a possible value of $$a^{3}+b^{3}$$

The number of students in Class XI in Science, Arts and Commerce streams of a school over a period of 4 years (2011 - 2014) has been depicted through the bar chart given below.

What is the difference between the averages of the number of Science and Commerce students in the given class over he given period of 4 years time ?

Acan complete a certain work in 35 days and B can complete the same work in 15 days. They worked together for 7 days, then B left the work. In how many days will A alone complete 60% of the remaining work?

In a circle with centre O, AD is a diameter and AC is a chord. Point B is on AC such that OB = 7 cm and $$\angle OBA = 60^\circ$$. If $$\angle DOC = 60^\circ$$, then what is the length of BC?

If $$x + y + z = 19, xyz = 216$$ and $$xy + yz + zx = 114$$, then the value of $$\sqrt{x^{3}+y^{3}+z^{3}+xyz}$$ is:

Ramesh spends 40% of his monthly salary on food, 18% on houserent, 12% on entertainment, and 5% on conveyance.Butdue to a family function, he has to borrow ₹16,000 from a moneylenderto meetthe expenses of ₹20,000. His monthly salary is :

A,B, C subscribe a sum of ₹75,500 for a business. A subscribes ₹3,500 more than B, and B subscribes ₹4,500 more than C. Out ofa total profit of ₹45,300, how much(in ₹) does A receive?