Since the distance travelled by a boy (going to school and coming back from school) is equal. So, average speed = 2xy/(x + y) Average speed = (2 x 55 x 45)/(55 + 45) Average speed = (2 x 55 x 45)/100 = 49 km/hr
The average of five consecutive odd numbers is 77. What is the average of the first three numbers among them?
In a tournament, the average score of eight batsmen in the Chennai team is 80. If the highest three scores are not considered, th...
The average weight of P and his three friends is 55 kg. If P is 4 kg more than the average weight of his three friends, what is P's weight (in kg)?
Each question contains a statement followed by Quantity I and II. Read the information clearly and answer your questions accordingly.
Qu...
Average of 22 numbers is 58. If the average of the first eight and last seven numbers is 65.5 and 48.5 respectively, and if the eleventh number is 35% m...
The average number of books on history, polity and geography in a library is 140, and the average number of books on history and geography is 150. If th...
A number is such that when it is multiplied by 5, it gives another number which is as much above from 270 as the original number (itself) is below 270. ...
The average age of a group of 70 students is 14 years. If three students whose ages are 22years, 20years, ________ years is replaced with three new stud...
The average age of 20 children and their teacher's age are 18 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
In an exam of 100 marks, the average marks of a class of 38 students are 72. If the top 3 scorers of the class leave, the average score falls “dow...
