Q.31. The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is :
(A) 45 kg
(B) 46 kg
(C) 47 kg
(D) 48 kg
Q.32. A, B, C rent a pasture. A puts 10 oxen for 7 months, B puts 12 oxen for 5 months and C puts 15 oxen for 3 months for grazing. If the rent of the pasture is Rs. 175, how much must C pay as his share of rent?
(A) Rs. 45
(B) Rs. 50
(C) Rs. 55
(D) Rs. 60
Q.33. The average of 7 consecutive numbers is 20. The largest of these numbers is :
(A) 21
(B) 22
(C) 23
(D) 24
Q.34. A and B started a business in partnership investing Rs. 20,000 and Rs. 15,000 respectively. After six months, C joined them with Rs. 20,000. What will be B's share in total profit of Rs. 25,000 earned at the end of 2 years from the starting of the business?
(A) Rs. 7500
(B) Rs. 9000
(C) Rs. 9500
(D) Rs. 10,000
Q.35. What is the probability of getting a sum 9 from two throws of a dice?
(A) 1/6
(B) 1/8
(C) 1/9
(D) 1/12
Q.36. is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780. The bigger part is :
(A) 24
(B) 34
(C) 44
(D) 54
Q.37. Three unbiased coins are tossed. What is the probability of getting at most two heads?
(A) 3/4
(B) 1/4
(C) 3/8
(D) 7/8
Q.38. The denominator of a fraction is 3 more than the numerator. If the numerator as well as the denominator is increased by 4, the fraction becomes 4/5. What was the original fraction?
(A) 7/11
(B) 8/11
(C) 9/11
(D) 10/11
Q.39. Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
(A) 1/2
(B) 3/4
(C) 3/8
(D) 5/16
Q.40. Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is :
(A) 12
(B) 137
(C) 14
(D) 15
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