Nateycorn8120 Nateycorn8120
  • 10-01-2024
  • Mathematics
contestada

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. none of these
B. 54.68
C. 55
D. 53.33

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