Question

20. If a : b = 3:4 and b :c = 8:9, find a :b:c.
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Answer 1

Explanation:

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Answer 2

Answer:

6:8:9

Explanation:

a/b = 3/4

So

a = 3b/4

b/c = 8/9

So

c = 9b/8

So

a:b:c = 3b/4 : b : 9b/8

Cancel all b as it is common

So

3/4 : 1 : 9/8

Take LCM for all numbers which is 8

6/8 : 8/8 : 9/8

Cancel all the denominators as they are the same

So

6:8:9