Question 509063
speed in fog = x mph

speed later = x+34 mph

Distance in fog = 3/2 *x

Distance after fog cleared = 9/2 *(x+34)

Distance I + distance II = 297

3/2 x +9/2*(x+34)= 297  

Multiply by 2
3x+9(x+34) = 297*2
3x+9x+306= 594
12x=594-306
12x=288
/12
x=24 mph speed in fog
speed on clear road = 58 mph

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