If The Average Marks Of Three Batches Of 55, 60 And 45 Students Respectively Is 50, 55, 60 Then The Average Marks Of All The Students Is:

Question: If The Average Marks Of Three Batches Of 55, 60 And 45 Students Respectively Is 50, 55, 60 Then The Average Marks Of All The Students Is:
a. 48.50
b. 54.68
c. 60.65
d. 62.75

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