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Question
An MBA studying student , calculate his cumulative average every test banking, accounting and financial were his last 3 test. 85 marks in banking increase his average by 3. 90 marks in accounting further increase his average by 2. 65 marks in financial increase his average of 4. reasoning is the next test, if he gets 57 in reasoning what will be his average ?
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Answer
Before Banking test, let's say he had n tests with average A.
After solving the equations from Banking and Accounting.
Average = 73 marks
Total marks after 6 tests = 459
Current average = 76.5
Total = 459 + 57 = 516
Tests = 7
Final Average = 516 ÷ 7 = 73.7
since 57 is well below his current average of 76.5, it got down to 73.7
