I scored a mean of 80 marks for 3 tests, scoring 20 marks more for Science than Maths and 5 marks less for History than Maths. What was the score on the Maths test?

Makayla Reilly 2022-09-14 Answered
I scored a mean of 80 marks for 3 tests, scoring 20 marks more for Science than Maths and 5 marks less for History than Maths. What was the score on the Maths test?
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Answers (1)

illpnthr21vw
Answered 2022-09-15 Author has 17 answers
Let marks scored in maths = n
Marks scored in science = n+20
Marks scored in History = n-5
According to question:
n + ( n + 20 ) + ( n 5 ) 3 = 80 n + n + 20 + n 5 = 80 × 3 3 n + 15 = 240 3 n 240 15 3 n = 225 n = 225 3 n = 75
Score of Maths Test = 75 marks.
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