An office clerk found that the average number of 15 students is 63.2 but he suddenly realized that during calculation, by mistake he writes the number 15 instead of 51. What is the actual average of these 15 students?
1
65.6
2
61.6
3
63.6
4
72.6
An office clerk found that the average number of 15 students is 63.2 but he suddenly realized that during calculation, by mistake he writes the number 15 instead of 51. What is the actual average of these 15 students?