21-A and B start business in partnership by investing Rs. 3,000 and Rs. 4,000 respectively. At the end of one year a profit of Rs. 1,400 is made. How much amount would A get as his share of profit?

(A) 400

(B) 500

(C) 600

(D) 700

22-The arithmetic average of 10 numbers is 10. If two is added to each number, by how much would the average increase?

(A) 1

(B) 2

(C) 11

(D) 12

23-What is the sum of n terms of the series 2 + 4 + 6 + ….. ?

(A) n(n+1)

(B) 2n(n+1)

(C) n(2n+1)

(D) n(n+1)/2

24-The area (in cm2) of the largest circle that can be drawn inside a rectangle with 8 cm by 9 cm is (Take π = 22/7)

(A) 77/2

(B) 352/7

(C) 164/7

(D) 2288/7

25-A work can be completed by 24 men in 17 days. To complete the work in 12 days, the number of additional men required is

(A) 6

(B) 8

(C) 9

(D) 10

26-If the fractions 5/14, 6/11, 7/9, 8/13 and 9/10 are arranged in ascending order of their values, which one will be the fourth?

(A) 7/9

(B) 5/14

(C) 8/13

(D) 9/10

27-What is the sum of two consecutive even numbers, the difference of whose squares is 100?

(A) 40

(B) 46

(C) 50

(D) 60

28-What is the perimeter of a circular plot which occupies an area of 616 square meter?

(A) 72 meter

(B) 76 meter

(C) 80 meter

(D) 88 meter

29-Out of 100 students 40 passed in Physics and 30 passed in Chemistry. If 18 passed in both the subject, then what is the number of students failed in both subject?

(A) 28

(B) 48

(C) 52

(D) 62

30-Out of the five numbers average of first four numbers is 15 and the average of last four numbers is 12. Also last number is 18. What is the first number?

(A) 27

(B) 30

(C) 33

(D) 48