Question

Ifa: b = 3:7 and b: c = 4:9, find a : b:c.​

Answer 1

Given :

• a : b = 3 : 7

• b : c = 4 : 9

To Find :

a : b : c

Solution :

a : b :: b : c = 3 : 7 :: 4 : 9

⇒ a/b :: b/c = 3/7 :: 4/9

_____________________

a : b : c = product of numerator : 1st denominator × 2nd numerator : product of denominator

⇒ a : b : c = 3 × 4 : 7 × 4 : 7 × 9

⇒ a : b : c = 12 : 28 : 63

★ Value of a : b : c is 12 : 28 : 63

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• https://brainly.in/question/19647817