Question

10. Find the value of x for which the following
to his expenditure.
forms a proportion :
(i) 16:8:: 7 : x
(ii) 36 : 45 :: 16 : 2x​

Answer 1

Answer:

16:8::7:x

as 1st×4th=2nd×3rd

16x=56.

x=3.5

and 36:45::16:2x

36×2x=45×16

72x=720

x=10