Directions: Read the following and answer the questions that follow.
There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information above the three cases, answer the questions that follow:
A’s highest score 22, Lowest score 18
B’s highest score 31, Lowest score 23
C’s highest score 33, Lowest score 26
If five students are transferred from A to B.
A man walked at a speed of 6 km/h from point A to B and came back from point B to A at the speed of 8 km/h. Find the ratio between the time taken by him in walking from point A to B to point B to A respectively.
1). 5 : 3
2). 2 : 3
3). 2 : 1
4). 3 : 2
A batsman has a certain average runs for 15 innings. In the 16th inning he made a score of 60 runs and thereby decrease in average by 4. His average after 16th inning is :
1). 127
2). 145
3). 120
4). 210
Of the four numbers whose average is 91, the first is 3/10 times the sum of other three. The first number is :
1). 126
2). 56
3). 168
4). 84
Find the average of the squares of the first 5 odd numbers.
1). 27
2). 29
3). 33
4). 35