Question

if a:b=4:7and b:c=5:7
step by step answer​

Answer 1

Answer:

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Answer 2

Answer:

firstly we can see that —————→ a/b=4/7

Thus b=7a/4

Now notice that b/c=5/6 , then ———-> b=5c/6

Now substitute to get 7a/4=5c/6

Thus c=21a/10

So we want ————-> a:b:c

express b and c in terms of a

thus a:7a/4:21a/10

Multiply all sides by 20 to get

20:35:42

Explanation:

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