Question

1.Long Answers Type Questions:
one 132 examinees a certain school the ratio of successful to unsuccessful students 9:2 if 4 more student passed‚ what would have been the ratio of successful to unsuccessful students?​

Answer 1

Answer:

28:5

Step-by-step explanation:

As ratio of successful and unsuccessful students is 9:2, we can assume:

No. of successful students = 9x

No. of unsuccessful students = 2x

Given total students = 132

=> 9x + 2x = 132

=> 11x = 132

=> x = 12

No. of successful students = 9*12 = 108

No. of unsuccessful students = 2*12 = 24

If 4 more students would have passed, it would also mean that 4 less students would have failed.

=> No. of successful students = 108 + 4 = 112

=> No. of unsuccessful students = 24 - 4 = 20

Ratio of successful to unsuccessful students = 112/20 = 28/5

Ratio of successful to unsuccessful students would be 28:5