Question
Average height of 18 boys is 150 cm and average height of 'n' girls is 140
Average height of 18 boys is 150 cm and average height of 'n' girls is 140
cm. If average height of all the boys and girls is 144 cm, then find the value of (n - 3).
More Average Questions
- The average marks of 30 students in a test is 64. Later, it is found that one student’s marks were wrongly entered as 68 instead of 86. What is the correct...
- The average age of (x + 6) students of a class is 16 years. If the 40 years old class teacher is also included then average age of the class gets increased...
- There are 45 players in a sports camp with an average age of 26 years. 5 more players join, decreasing the average to 25. Find the average age of the new p...
- The average of a set of 's' numbers is 60. If 150 is added to the set, then the average of the set becomes 60.5. Find the value of '4 X (s - 10)'.
- There are three numbers a, b and c such that a = 160, (a + b) = 460 and (c – b) = 80. Find their average.
- The average age of 33 children and their teacher's age are 25 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
- Average of 15 observations calculated by a student was 70 but when he again went through his observations he realised that he took value of three observati...
- Average of 8 numbers is 50. If average of first four and last two numbers is 60 and 70, respectively then find the fifth number given that ratio of fifth a...
- A park has an average of 140 visitors on Sundays and 80 on other day. The average number of visitors in a month of 30 days starting with Sunday is
- The average weight of a group of five persons, A, B, C, D, and E is 62 kg. If another person K joins the group then the average weight of the group is decr...
Relevant for Exams:
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
