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October 20, 2014

October 20, 2014

Posted by **Josh** on Sunday, January 25, 2009 at 11:02pm.

(a) 4

(b) 5

(c) 6

(d) 7

(e) 8

- Math -
**drwls**, Sunday, January 25, 2009 at 11:15pmVj = 0.8 Vm

Josh rides for time t at speed Vj

Mike rides for time t/2 at speed Vm

Vm*t/2 + Vj*t = 13

Vm*t/2 + 0.8 Vm*t = 13

1.3 Vm t = 13

Vm t = 10

The distance Mike travelled is

(1/2) Vm t = 5 miles

You cannot solve for Vm and t separately, but you don't have to to get the answer.

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