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This is a Branching question.

   Honeydew     Apple  Left  Total
R1   2u 5u 7u
R2   3 2 5
CR 10u 15u 10u 35u

10u = 5 honeydew

10u = 5 x 4 = 20 apples

5u = 20 ÷ 2 = 10

15u = 10 x 3 = 30 apples

 

 

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Hi Mr Khong,
May I know what is CR? Thanks !

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CR means Common Ratio.

CR means the ratio that link up the three items.

Eg X : Y : Z.

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7 x 5 = 35 units (money Lily had)
(2/7) x 35 = 10 units (spent on honeydew)
35 – 10 = 25 units (remainder)
(3/5) x 25 = 15 units (spent on apples)
10 units = 5 honeydews
15 units = 7.5 honeydews = 7.5 x 4 = 30 apples

Ans : 30 apples.

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