david scores an average of 65 marks in 3 tests. how many marks must he score i

Question

david scores an average of 65 marks in 3 tests. how many marks must he score in the 4th test if he wants his average mark to be 5 more than his previous average mark?

Options:

A . 84

B . 85

C . 86

D . 87

Answer: Option B
Explanation :

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