Practice Average – Consider three classes A, B and C with 20, 30 and 50 students respectively. The averages score in maths of students in class B is 16 more than that of those in class C and the average score of those in class A is 2 more than the overall average of scores in A, B and C. What is the difference between average of class C and class A?
Practice Average – Some students are standing in a circle in which 6th and the 16th student are standing opposite to each other. find how many students were present there.
Practice Average – Average age of a group of 39 students was found to be 13.5 years. But later it was found that 2 students whose ages taken for the average as 12 years and 13 years were actually 10 years and 14 years. How much the actual average should change from 13.5 years?
Practice Average – When a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students
Practice Average – Average age of a group of 39 students was found to be 13.5 years. But later it was found that 2 students whose ages taken for the average as 12 years and 13 years were actually 10 years and 14 years. How much the actual average should change from 13.5 years?
Practice Average – A class consists of 20 boys and 30 girls. In the mid-semester examination, the average score of the girls was 5 higher than that of the boys. In the final exam, however, the average score of the girls dropped by 3 while the average score of the entire class increased by 2. The increase in the average score of the boys is
Practice Average – If a, b, c, d, e are five consecutive odd numbers, their average is:
Practice Average – In a test called ACSAT, the average marks of 15 test takers is 240. If the marks of 5 test takers are subtracted, the average marks decreases by 40. What is the average marks of 5 test takers?
Practice Average – If Mini downloads three more songs in her mobile, she will have songs worth 512 MB in her mobile. If on an average each song is 4 MB. How many songs did she initially have in her phone before downloading?
Practice Average – The average age of 8 men is increased by 2 years, when two of them, whose ages are 20 and 24 years, are replaced by two women.What is the average age of the women?
Practice Average – In a match, awards are given to each of 11 members of the team and a trophy to the team. In all winning team gets 2.75 kg weight awards, If the weight of match winning trophy is 1.275 kg. What is the weight of the award given to each player?
Practice Average – The interior angle of an octagon ABCDEFGH are in AP. if the largest and second largest have an average of 153, find the average of the least two?
Practice Average – Determine the average of the following data.
47, 87, 26, 63, 57
Practice Average – The mean of 100 items was found to be 30. If at the time of calculation two items were wrongly taken as 32 and 12 instead of 23 and 11.What is the correct mean?
Practice Average – Determine the average of the following data.
81, 73, 69, 17, 20