Answer:
191 2/3 km
Explanation:
You want to know the distance traveled in 2 h 30 min if the first 125 km is traveled at 90 km/h and the remainder is traveled at 60 km/h.
The relation between speed, distance, and time is ...
t = d/s
Here the total time will be the sum of the times of the two legs of the trip. In hours, that is ...
2.5 = 125/90 +(d -125)/60 . . . . . . . where d is the total length of the trip
2.5 -125/90 +125/60 = d/60 . . . . . . add the opposite of non-d terms
d = 60(2.5 +125(1/60 -1/90)) . . . . . . multiply by 60
= 60(2.5 +125/180) = 191 2/3
Your hometown is 191 2/3 km from school.
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Additional comment
You drove 1 h 23 min 20 s at speed, and 1 h 6 min 40 s in the rain.
