Red House Primary School

Sally is thinking of a ratio.the simplest form of the ratio is 2:3.if she subtracts 1 from the first number in her ratio and adds 2 to the second number of her ratio,the simples form of new ratio is 1:2.Find the ratio that Sally is thinking of

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1. x/y = 2/3
(x-1)/(y+2) = 1/2

The original ratio was 8/12

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2. 10/20

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