5m-n=3m+4n, then find the values of the following expressions.
i.
ii. 
(i) Given: 5m – n = 3m + 4m
⇒ 5m – 3m = 4n + n
⇒ 2m = 5n
⇒ m/n = 5/2
⇒ m2/n2 = 25/4
Apply componendo and dividendo:
![]()
![]()
= 29:21
(ii)
Given: 5m – n = 3m + 4m
⇒ 5m – 3m = 4n + n
⇒ 2m = 5n
⇒ m/n = 5/2
⇒ 3m/4n = 15/8
Apply componendo and dividendo:
![]()
![]()
= 23: 7
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