cecelia took40 min to complete a journey. she traveled 100km/hour for half distane and 60km/hour another half of the distance
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Answer:
40 min = 40/60 hr = 2/3 hr
Distance = x km
t=distance/speed
x/200+x/120=2/3
multiply by 6oo
3x+5x=400
8x=400
x = 400/8=50km
The journey is for 50km
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