Find the Ratio Between A : B : C .

If A : B = 7 : 9 and B : C = 3 : 5, then A : B : C is equal to

  1. 7 : 9 : 5
  2. 21 : 35 : 45
  3. 7 : 9 : 15
  4. 7 : 3 : 15
Manish Listener Asked on 9th July 2015 in Maths.
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1 Answer(s)

Answer: (2) 21 : 35 : 45
Explanation:-
Formula-

A : B : C = A x B : A x C : B x C
A : B = 7 : 9    and B : C = 3 : 5
Then, A : B : C = 7 x 3 : 7 x 5 : 9 x 5
= 21 : 35 : 45
Hence, the answer is (2) 21 : 35 : 45.

Anurag Mishra Professor Answered on 9th July 2015.
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