Question

Abhinav improved his average travel speed by 8 km/h after journeying for 5 hours, completing his trip in a total of 8 hours. If instead he had boosted his speed by 18 km/h after the initial 5 hours, he would have arrived at his destination 30 minutes earlier. Calculate the distance Abhinav covered during the portion of his trip with the increased speed.

A 180 km
B 150 km
C 120 km
D 60 km
E None of these
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