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1.The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
(a) 19 : 22
(b) 20 : 21
(c) 21 : 22
(d) 17 : 18
2.Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 : 57. What is Sumit’s salary?
(a) Rs. 20,000
(b) Rs, 30,000
(c) Rs, 38,000
(d) Rs.45, 000

3.A car covers 1/5 of the distance from A to B at the speed of 8 km/hour, 1/10 of the distance at 25 km per hour and the remaining at the speed of 20 km per hour. Find the average speed of the whole journey?
(a) 12.625 km/hr
(b)  13.625 km/hr
(c) 14.625 km/hr
(d) 15.625 km/hr

4.A cistern has 3 pipes A, B and C. A and B can fill it in 3 and 4 hours respectively, and C can empty it in 1 hour. If the pipes are opened at 3 p.m., 4 p.m. and 5 p.m. respectively on the same day, the cistern will be empty at-
(a) 7.12 p.m.
(b) 7.15 p.m.
(c) 7.10 p.m.
(d) 7.18 p.m.

5. A took two loans altogether of Rs.1200 from B and C. B claimed 14% simple interest per annum, while C claimed 15% per annum. The total interest paid by A in one year was Rs.172. Then, A borrowed-
(a) Rs.800 from C
(b) Rs.625 from C
(c) Rs.400 from B
(d) Rs.800 from B

6. P can do a piece of work in 10 days, which Q can finish in 15 days. If they work on alternate days with P beginning, in how many days the work will be finished?
(a) 12 days
(b) 18 days
(c) 10 days
(d) 6 days

7.Three years ago the average age of A and B was 18 years. With C joining them now, the average becomes 22 years. How old is C now ?
(a) 24 years
(b) 27 Years
(c)28 years
(d) 30 years

8.Find the sum of ‘n’ consecutive odd numbers beginning with unity?
(a) 2n
(b) n^2
(c) 2n + 2
(d) (n-1)^2

9.Sonu and Monu leave points x and y towards y and x respectively simultaneously and travel in the same route. After meeting each other on the way, Sonu takes 4 hours to reach her destination, while Monu takes 9 hours to reach his destination. If the speed of Sonu is 48 km/hr, what is the speed of Monu?
(a) 72 mph
(b) 44 mph
(c) 20 mph
(d) 60 mph