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If a : b = 8 : 9 and b : c = 6 : 5, then find a : b : c?

If a : b = 8 : 9 and b : c = 6 : 5, then find a : b : c?

Explanation

a:b = 8:9, b:c = 6:5

Make b same:

a:b = 16:18, b:c = 18:15

So, a:b:c = 16:18:15