902.
A student is marked as qualified if he/she obtains marks above 40.5. Here, the ratio of the number of qualified students to
that of students who are not qualified is:
(A)
9 : 2
(B)
5 : 1
(C)
19 : 4
(D)
17 : 4
903.
Two cubes, each of edge 5 cm, are joined face to face. Find the surface area of the cuboid thus formed.
(A)
(B)
(C)
(D)
904.
Two triangles ABC and DEF are similar. The smallest side of ABC is equal to 15 units. If the sides of ABC are in the ratio 3 ∶ 4
∶ 5, and the area of DEF is half of the area of ABC, then what is the largest side of DEF (in units)?
(A)
(B)
(C)
(D)
905.
If A : B = 2 : 3 and B : C = 7 : 8, find A : C.
(A)
(B)
(C)
(D)
906.
The value of a machine depreciates every year by 5%. If the present value of the machine is ₹80,000, what will be its value
after 2 years?
(A)
₹72,200
(B)
₹74,400
(C)
₹74,000
(D)
₹72,000
907.
A man can row a boat at speed 8 km/h in still water. It takes thrice as long to row upstream as it does to row downstream.
Find the speed of the stream (in km/h).
(A)
5
(B)
4
(C)
6
(D)
3
908.
The inner and outer radii of a hemispherical wooden bowl are 6 cm and 8 cm, respectively. Its entire surface has to be
polished and the cost of polishing π cm2 is Rs.50. How much will it cost to polish the bowl?
(A)
Rs.12,000
(B)
Rs.10,000
(C)
Rs.11,600
(D)
Rs.11,400
909.
Which of the following statements is INCORRECT about the circle?
(A)
(B)
(C)
(D)
910.
Ram is 20 years older than Rahul. ‘n’ years ago Ram was thrice as old as Rahul. ‘2n’ years from now the ratio of the ages of
Ram and Rahul will be 15 : 11. What is the value of ‘n’?
