A van travels 25 km with a constant speed of 65 km/h and another 50 km with a constant speed of 80 km/h. How long did it take for this trip?
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Explanation:
Time taken in First 25 km= 25/65
= 5/13h
Time taken in another 50km
= 50/80
= 5/8h
Total time = 5/13 + 5/8
= (40+65)/104
= 105/104 h
= 1 h and 15/26 minutes
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