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This is a Fractional before after question.

LCM  (left)

5/6 × 2/3 × 4/5 = 40/90

    After  Transfer Before   Transfer  Before transfer  Before 
A  40u  – 10u  30u    30u 5/6 = 30/36 36u
 40u    40u  2/3 = 40/60  60 – 6u 54u
C    40u  4/5 = 40/50  50u  – 20u  30u   30u
Total 120u   120u   120u   120u

120u = 360

1u = 360 ÷ 120 = 3

36u = 3 × 36 = 108 (A)

54u = 3 × 54 = 162 (B)

30u = 3 × 30 = 90 (C)

 

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