Question

if a:b=5:9 and b:c=4:7 find a:b:c​

Answer 1

Answer:

20: 36: 63.

Step-by-step explanation:

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a : b = 5 : 9 : 9

<----

c : d = 4 : 4 : 7

Then ------------

here comes 20: 36: 63

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