Q. 2 A factory buys 8 machines. 3 Machine A, 2 Machine B and rest Machine C. Prices of the machines are Rs 100000, Rs 80000, and Rs 45000 respectively. Calculate the average cost of these machines?

Q. 3 The average revenues of 11 consecutive years of a company is Rs 77 lakhs. If the average of the first 6 years is Rs 72 lakhs and that of the last 6 years is Rs 84 lakhs, What is the revenue for the Sixth year?

Q. 5 In a class of 39 students there are 36 girls. The average weight of these girls is 38 Kg and the average weight of the full class is 40 kgs. What is the average weight of the boys of the class?

Q. 6 In a class of 56 students there are 28 girls. The average weight of these girls is 46 kg and average weight of the full class is 51 kgs. What is the average weight of the boys of the class?

Q. 7 The average weight of Sudesh, Jyothi, and Ritu is 89 kg. If the average weight of Sudesh and Jyothi be 98 kg and that of Jyothi and Ritu be 83 kg, then the weight of Jyothi is

Q. 8 A factory buys 10 machines. 1 Machine A, 4 Machine B, and rest Machine C. The prices of the machines are Rs 90000, Rs 40000 and Rs 40000 respectively. Calculate the average cost of these machines?

Q. 9 In a class of 55 students there are 34 girls. The average weight of these girls is 51 Kg and the average weight of the full class is 55.2 kgs. What is the average weight of the boys of the class?

Q. 10 A factory buys 10 machines. 2 Machine-A, 3 Machine-B and rest Machine-C. The prices of the machines are Rs 95000, Rs 60000 and Rs 50000 respectively. What is the average cost of these machines?

Q. 12 The average revenues of 13 consecutive years of a company is Rs 78 lakhs. If the average of the first 7 years is Rs 73 lakhs and that of the last 7 years is Rs 85 lakhs, what is the revenue for the 7th year?

Q. 13 The average revenues of 11 consecutive years of a company is Rs 69 lakhs. If the average of ﬁrst 6 years is Rs 64 lakhs and that of the last 6 years is Rs 76 lakhs, what is the revenue for the 6th year?

Q. 15 The average weight of Shivshankar, Gopesh and Reena is 97 kg. If the average weight of Shivshankar and Gopesh is 93 kg and that of Gopesh and Reena is 82 kg, then the weight of Gopesh is

Q. 17 The average weight of Somdev, Gurdeep, and Ritu is 85 kg. If the average weight of Somdev and Gurdeep be 79 kg and that of Gurdeep and Ritu be 73 kg, then the weight of Gurdeep is

Q. 18 There are 90 students in a class, out of which 70% are from village A and others are from village B. The average score of students from village B in a test is 20% more than that from village A. If the average score of all the students is 53, then what is the average score of the students from village B?

Q. 19 The average weight of the students in a group was 75.4 kg. Later on, four students having weight, 72.9 kg, 73.8 kg, 79.5 kg, 87.4 kg joined the group. As a result, the average weight of all the students in the group increased by 0.24 kg. What was the number of students in the group initially?

Q. 20 9 years ago, the average age of a family of five members was 33 years. Now, three new members join whose ages are in ascending order with consecutive gaps of 8 years. If the present average age of the family is the same as it was 9 years ago, what is the age (in years) of the youngest new member?