Question
The mean attendence of a class from Monday to Saturday was 34. If the mean attendence on Monday Tuesday Wednesday and Thursday was 33 and that on Thursday Friday and Saturday was 35. Then find the attendence on Saturday?
Answers
Steve
3*33 + 2*35 + x = 6*34
or, if you notice that 34 is midway between 33 and 35, the extra day had to be a 35, to balance them out.
or, if you notice that 34 is midway between 33 and 35, the extra day had to be a 35, to balance them out.
xoxo
Number of days from Monday to Saturday = 6
Attendance on Monday to Saturday = 34
Attendance on Monday to Saturday = 34*6 = 204
Number of days from Monday to Thursday = 4
Attendance on Monday to Thursday = 33
Attendance on Monday to Thursday = 33 * 4 =132
Number of days from Thursday to Saturday = 3
Attendance on Thursday to Saturday = 35
Attendance on Thursday to Saturday = 35 * 3 = 105
204 - 132 - 105 = -33
Attendance on Monday to Saturday = 34
Attendance on Monday to Saturday = 34*6 = 204
Number of days from Monday to Thursday = 4
Attendance on Monday to Thursday = 33
Attendance on Monday to Thursday = 33 * 4 =132
Number of days from Thursday to Saturday = 3
Attendance on Thursday to Saturday = 35
Attendance on Thursday to Saturday = 35 * 3 = 105
204 - 132 - 105 = -33
AROHI
So we will have to do this question like this
34*6= 304
33*4= 132
35*3= 105
Sum of all = 304 - 132 - 105 = 33
34*6= 304
33*4= 132
35*3= 105
Sum of all = 304 - 132 - 105 = 33