The average of the number of students in three colleges S, T and U is 845. The number of Students in college S and U is 75 and 81 more than the number of students in college T. Find the number of students in college T. find the number of students in college T.
The average age of Rahul, Vikas and Sagar, 4 years ago was 42 years and that of Rahul and Sagar, 7 years ago was 32 years. Find the present age of Vikas.
4 boys appear for a test. The average of the score of the first three boys is 72 while that of last three boys is 79. If the last boy scores 96 marks, find the score of the first boy.
Consider a sequence of seven consecutive integers. The average of first five integers is N. The average of all the seven integers is
Three Math classes; X, Y, and Z take an algebra test. The average score in class X is 83. The average score in class Y is 76. The average score in class Z is 85. The average score of all students in class X and Y together is 79. The average score of all students in classes Y and Z together is 81. What is the average of all the three classes?
1 out of 3
A set of consecutive positive integers beginning with 1 is written on the blackboard. A student came along and erased one number. The average of the remaining numbers is 35 7/17. What was the number erased?
Amol was asked to calculate the arithmetic mean of 10 positive integers, each of which has 2 digits. By mistake, he interchanged the 2 digits, say a and b, in one of these 10 integers. As a result, his answer for the arithmetic mean was 1.8 more than what it should have been. Then b – a equals to
The average height of 22 toddlers increases by 2 inches when two of them leave this group. If the average height of these two toddlers is one-third the average height of the original 22. Then the average height, in inches, of the remaining 20 toddlers is.
First 10 multiples of 1, 2…, and 10 are taken. What is the average of all these 100 numbers?
Consider six distinct natural numbers such that the average of two smallest numbers is 14, and the average of two largest numbers is 28. Then the maximum possible value of the average of these six integers is
2 out of 3
The average of 38, 84, 63, 45, 32 and n lies between 50 and 60. If n is an integer greater than the average of the numbers, then n lies between
The average of three integers is 13. When a natural number n is included, the average of these four integers remain an odd integer. the minimum possible value of n is
Suppose Hospital A admitted 21 less Covid infected patients than Hospital B, and all eventually recovered. The Sum of recovery days for patients in Hospital A and B were 200 and 152 respectively. If the average recovery days for patients admitted in Hospital A was 3 more than the average in Hospital B then the number admitted in Hospital A was. ______
There are two containers: the first contains 500 ml of alcohol, while the second contains 500 ml of water. Three cups of alcohol from the first container is taken out and is mixed well in the second container. Then three cups of this mixture is taken out and is mixed in the first container. Let A denote the proportion of water in the first container and B denote the proportion of alcohol in the second container. Then
There are three persons A, B, and C in a room. If a person D joins the room, the average weight of the persons in the room reduces by x kg. Instead of D, if person E joins the room, the average weight of the persons in the room increases by 2x kg. If the weight of E is 12 kg more than that of D, then the value of x is
3 out of 3
