Question

a student nerds to a score at least 30% marks to pass a test if a student gets 135 marks and fails by 15 marks find the maximum marks of the test

Answer 1

135+15 = 150 is the passing marks 
let the total marks of the exam be X
(150/x)×100= 30%
150/x=30/100
(150×100)/30 =x               ∵by the cross-multiplication 
500=x
the total marks is 500

Answer 2

Answer:

Step-by-step explanation:

passing marks=135+15

=150

ATQ-

x of 30%=150

30x/100=150

So,by cross multiplication,

x=(100×150)/30

=500

Hence,the maximum marks will be 500