Question

A student scored 65 marks in I language, 50 marks in Science, 55 marks in Social
Science and some marks in Mathematics. If the average marks scored by him
in all the four subjects is 60, then the marks scored by him in Mathematics is? lam asking whether it is in Quadratic equation​

Answer 1

Step-by-step explanation:

hope you all understand

Answer 2

Step-by-step explanation:

marks in I language= 65

marks in science= 50

marks in social science= 55

marks in mathematics be = x

avg marks scored=60

then,

65+50+55+x= 60x4

170+x= 240

x= 240-170

x=70