Final answer:
Train B takes 54 more minutes than Train A to travel 120 km.
Step-by-step explanation:
To find the difference in time taken by Train B compared to Train A, we need to calculate the time taken by both trains. Time = Distance / Speed. For Train A, time taken = 120 km / 80 km/h = 1.5 hours. For Train B, time taken = 120 km / 50 km/h = 2.4 hours. To find the difference in minutes, we can convert the time taken by Train B to minutes. 1 hour = 60 minutes, so Train B takes 2.4 x 60 = 144 minutes. Train B takes 144 - 90 = 54 more minutes than Train A.
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