Share
Notifications

View all notifications
Advertisement

If 7x – 15y = 4x + Y, Find the Value of X: Y. Hence, Use Componendo and Dividend to Find the Values Of: (9x + 5y)/(9x - 5y) - Mathematics

Login
Create free account


      Forgot password?

Question

If 7x – 15y = 4x + y, find the value of x: y. Hence, use componendo and dividend to find the values of:

`(9x + 5y)/(9x - 5y)`

Solution

7x – 15y = 4x + y

7x - 4x = y + 15y

3x = 16y

`x/y = 16/3`

`=> (9x)/(5y) = 144/15`    (Multiplying both sides by 9/5)

`=> (9x + 5y)/(9x - 5y) = (144 + 15)/(144 - 15)`       (Applying componendo and dividenfo)

`=> (9x + 5y)/(9x - 5y) = (159)/(129) = 53/43`

 

  Is there an error in this question or solution?
Advertisement

APPEARS IN

 Selina Solution for Concise Mathematics for Class 10 ICSE (2020 (Latest))
Chapter 7: Ratio and Proportion (Including Properties and Uses)
Exercise 7(D) | Q: 16.1 | Page no. 102
Advertisement

Video TutorialsVIEW ALL [1]

Solution If 7x – 15y = 4x + Y, Find the Value of X: Y. Hence, Use Componendo and Dividend to Find the Values Of: (9x + 5y)/(9x - 5y) Concept: Componendo and Dividendo Properties.
Advertisement
View in app×