madelynmorgan5590 madelynmorgan5590
  • 11-01-2024
  • Mathematics
contestada

If the average marks of three batches of 55, 60, and 45 students respectively are 50, 55, and 60, then what is the average marks of all the students?
a)None of these
b)54.68
c)55
d)53.33

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