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This is a before After question.

    Before    Transfer    After       ratio   
$2 7u -24  7u – 24  1
$5      5u + 24 5u + 24  3
         

(7u – 24)/ 1 = (5u + 24) / 3

21u – 72 = 5u + 24

21u – 5u = 24 + 72

16u = 96

1u = 96 ÷ 16 = 6

a) 

5u = 5 × 6 = 30 (amended)

b)

30 x 5 = $150

7u = 7 × 6 = 42

42 × 2 = $84

150 + 84 = $234

 

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What is 5u = 15 x 6 =90??

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Hi,

Amended. Sorry for the wrong working. 

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