<PRE><B>Question 841897</B>
a minibus taxi travels at 70 km.h^-1 for x hours and then at 80 km.h^-1 for (x/2 +3). If the total distance traveled is 460 km, find the value of x. 
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distance = rate*time
distance + distance = distance
70x km + 80((x/2)+3) = 460
70x + 40x + 240 = 460
110x = 220
x = 2
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Cheers,
Stan H.
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