Question

A car takes 15 hours less to travel from point 'G' to point 'H' at a speed of 45 km/h than it takes to travel at 15 km/h. If 60% of the distance is covered at 54 km/h and the rest at 27 km/h, what is the total time taken for the journey?

A 8.75h
B 7.25h
C 4.55h
D 10.25h
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