Answer:
The trip took 3 hours.
Step-by-step explanation:
Let the time the passenger spent in the car be t hours.
(b) 40t + 30 = 150 is the equation linking amount of money earned with time spent carrying the passenger.
Solving:-
40t = 150 - 30
40t = 120
t = 120 / 40
t = 3 hours
(0,-12)
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