• 2018.12.05
    星期三

Answers, Game

[2018.12.05] 發表

【明報專訊】■Game 1

1. B

2. A

3. C

■Game 2

B

■Game 3

Pat's speed: 4.5 m/h

Bill's speed: (4.5+0.4) m/h

Time needed: t

4.5×t+4.9×t = 23.5

(4.5+4.9)×t = 23.5

t = 23.5÷(4.5+4.9)

= 2.5 hours

[Smarties' Power English 第219期]

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