Problema Solution
A student obtains 6 marks less than the class average if we double his marks it will be 40 above the average calculate the student marks and the average of the class
Answer provided by our tutors
suppose the average marks =x
student score = x - 6
2(x - 6) = x + 40
2x - 12 = x + 40
2x - x = 40 + 12
x = 52
average mark = 52
student mark = 52 - 6 = 46