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Find A and B if :A B+3 7_____6 A​

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Answer:

As a:b=4:7, a=4x and b=7x. Now b:c=5:6, so b/c=5/6 which implies that c=6b/5. So c=(6X7x)/5 = 42x/5. a:b:c = 4x:7x:42x/5. On multiplying by 5 to simplify the ratio, we GET. a:b:c = 20:35:42.

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