Question

Ravi obtained 70 and 75 marks in the first two unit tests. find the number of minimum marks he should get in the third test to have an average of atleast 60 marks

Answer 1

70+75+x=180
x=35 therefore minimum marks are 35

Answer 2

let the marks of 3 subject be y

now y+70+75=180

y=180-145
y=35