Question

Renu obtained an average marks of 70 in science and maths an average marks of 60 science English if she obtained 55 marks in maths find her marks in science and English.​

Answer 1

marks in science = 85

marks in english = 35

Explanation:

average marks in science and maths = 70

marks in maths = 55

let marks in science = x

x + 55 / 2 = 70

x + 55 = 140

x = 140 - 55 = 85

thus marks obtained in science, x = 85

average marks in science and english = 60

let marks in english = y

85 + y / 2 = 60

85 + y = 120

y = 120 - 85 = 35

thus marks obtained in english, y = 35