M11-03 (600) If a passenger sitting near the window in a tra : Retired Discussions [Locked]
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# M11-03 (600) If a passenger sitting near the window in a tra

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Manager
Joined: 12 Dec 2012
Posts: 162
Location: Poland
Followers: 5

Kudos [?]: 176 [0], given: 67

M11-03 (600) If a passenger sitting near the window in a tra [#permalink]

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13 May 2013, 13:29

I understand the provided solution but anyway I am curious what am I doing wrong here:

$$R=40 \frac{km}{h}=\frac{100}{9} \frac{m}{s}$$

$$T=3 s$$

$$D=75 m$$

Speed of the oncoming train in meters per second = N
Solution:

$$(\frac{100}{9}+N)*3=75$$

$$\frac{100}{9}+N=25$$

$$N=25-\frac{100}{9}$$

$$N=LT15\frac{m}{s}=LT54 \frac{km}{h}$$

So I am picking the B. Where is the bug?
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M11-03 (600) If a passenger sitting near the window in a tra   [#permalink] 13 May 2013, 13:29
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# M11-03 (600) If a passenger sitting near the window in a tra

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