UP SI MATHS QUIZ

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Question 1:

The ratio of the number of boys and girls in a class is $9: 7$. The average weight of all the boys and girls is $54.25 \mathrm{~kg}$. If the average weight of the girls is $52 \mathrm{~kg}$, then what is the average weight (in $\mathrm{kg}$ ) of the boys?

Question 2:

The run rate in the first 10 overs of a cricket match was only $7.2$. What should be the average run rate in the remaining 40 overs to chase the target of 272 runs?

Question 3:

The average salary of all the employees in a workshop is ₹ 18,000. The average salary of 7 technicians is ₹ 24,000 and that of the remaining employees is ₹ 12,000. What is the total number of employees in the workshop?

Question 4:

The average weight of 14 boys in a class is 40.25 kg and that of the remaining 10 boys is 35.15 kg. Find the average weight of all the boys in the class.

Question 5:

The average  marks of 35 students in a class examination is 46. Later, it was found that the marks of two students each were read as 33 instead of 23, and that of one student was read as 30 instead of 36. Find the actual average marks of the students of the class.

Question 6:

The average price of 10 books is ₹ 150 , while the average price of 8 of these books is ₹ 135. Of the remaining 2 books, if the price of one book is 40% more than the price of the other book, then what is the price of the costlier of these two books?

Question 7:

4 years ago, the average age of a family of 4 members was 19 years. A baby having been born, the average age of the family is the same today. Find the present age of the baby.

Question 8:

The average weight of the students in a class is 56 kg. If five more students whose average weight is 58 kg join the class, the average weight of the students increases by 0.5 kg. What was the original number of students in the class?

Question 9:

The average weight of 6 persons increases by 1.5 kg when a new person comes in place of one of them who was weighing 65 kg. What is the weight of the new person?

Question 10:

The average weight of 24 persons in a group is 72 kg. If 3 persons with average weight 78 kg leave the group and 4 persons of average weight 75 kg join the group, then what will be the average weight (in kg ) of the persons in the group now?