ICSE Class 10CISCE
Share
Notifications

View all notifications

In an Examination the Ratio of the Number of Suo:Essful Candidates to Unsuccessful Candidates is 7:5. - ICSE Class 10 - Mathematics

Login
Create free account


      Forgot password?

Question

In an examination the ratio of the number of suo:essful candidates to unsuccessful candidates is 7:5. Had 30 more appeared and 10 more passed, the ratio of successful candidates to unsuccessful candidates would have been 4:3. Find the number of candidates who appeared in the examination originally. 

Solution

Let successful candidates be 7x and unsuccessful candidates be 5x.

Now , `(7"x" + 10)/(5"x" + 20) = 4/3`

⇒  21x + 30 = 20x + 80 

⇒ x = 50

7x = 7 x 50 = 350 

5x = 5x50 = 250

.·. 7x + 5x = 350 + 250 = 600 

Therefore, there were 600 candidates originally. 

  Is there an error in this question or solution?

APPEARS IN

 Frank Solution for Frank Class 10 Mathematics Part 2 (2016 to Current)
Chapter 9: Ratio and Proportion
Exercise 9.1 | Q: 30

Video TutorialsVIEW ALL [1]

Solution In an Examination the Ratio of the Number of Suo:Essful Candidates to Unsuccessful Candidates is 7:5. Concept: Ratio and Proportion Example.
S
View in app×