Question
In a class of 50 students there are 22 girls who scored
an average of 35 marks in the test. What is the average marks of the boys if the class average is 42 marks?Solution
Sum of scores of all students=50*42=2100 Sum of 22 girls scores=35*22=770 Sum of scores of boys=2100-770 =1330 Average of boys=1330/28 = 47.5
More Average Questions
What will come in place of (?) question mark in the given number series.
12, 27, 44, 65, ?, 139
124, 107, 91, ? , 62, 49
257, 399, 566, ?, 983, 1237Â
12   18   31   51   ?   112
37, 57, 82, ?, 147, 187
41, 82, ?, 984, 4920, 29520Â Â Â
What will come in place of the question mark (?) in the following series?
4, 3, 7, 26, 101, ?
15, 31, 67, 131, ?, 375
- What will come in place of the question mark (?) in the following series?
121, 115, 102, 82, 55, ? 188    178    158   ?     88    38
