Question

In an examination, ratio of passes to failures is 8:1. If 10 less had appeared and 30 more had passed the ratio would have been 15:1. How many students had appeared for the examination?

Answer 1

Answer:

810

Step-by-step explanation:

Let, no. of students passed = 8x

So, students failed = x

Now, total students = 8x + x = 9x

ATQ, case-2

Total students = 9x - 10

Passed = 8x + 30

Fail = ( 9x - 10 ) - ( 8x + 30 ) = x - 40

Now, ( 8x + 30 ) / ( x - 40 ) = 15 / 1

8x + 30 = 15x - 600

7x = 630

x = 90

9x = 810

Answer 2

Answer:

hi dear it's your answer...

Step-by-step explanation:

hope it helps mainly the 10 th class students of icse