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

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

A). 2/7

B). 1/7

C). 3/7

D). 5/7


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Answered by on | Votes 0 |

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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