If a : b = 4 : 1, then find (a - 3b)/(2a - b).

1.	If a : b = 4 : 1, then find (a - 3b)/(2a - b).
Answer» 1/7 a : b = 4 : 1 a/b = 4/1 => a = 4b (a - 3B)/(2A - b) = (4b - 3b)/[2(4b) - b] = b/(8B - b) = b/7b => 1/7

Answer»

1/7

a : b = 4 : 1

a/b = 4/1 => a = 4b

(a - 3B)/(2A - b) = (4b - 3b)/[2(4b) - b]

= b/(8B - b) = b/7b => 1/7

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If a : b = 4 : 1, then find (a - 3b)/(2a - b).

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