Question 839078
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Hi
Jill is 16.5km away from Joe.
Both begin to walk toward each other at the same time. 
Jill walks at 3km per hour.
If they meed in 3 hours, how fast{{{highlight_green(x)}}} is Joe walking
 {{{3kmp*3hr + x*3hr = 16.5km}}}  Solve for x
         x = 7.5/3 kmph
         x = 2.5 kmph