Question 1098540
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<pre>
Let R be the bus speed in the city, in km/h.

Then its speed in highway is 2r.


Moving 1 hour in the city, the bus covered r kilometers.

Moving the remaining 4 hours on the highway, the bus covered 4*(2r) = 8r kilometers.


The sum of the two distances is 387 kilometers.
It gives you an equation

r + 8r = 387  ====>  r = {{{387/9}}} = 43.


<U>Answer</U>.  The speed in the city was 43 km/h.
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Solved.