Paolo and Monika are both travelling by train. Paolo's train travels 70 km in 35 minutes. Monika's train travels 684 km. It leaves at 16:15 and arrives at 20.45. Work out the difference, in km/h, between the average speed of their trains.
Answers
Step-by-step explanation:
The speed of Monika's train is faster 32 km/hr.
Step-by-step explanation:
Paolo's train travels the distance in 35 minutes = 70 km
speed=\frac{distance}{time}
35 minute (35/60) = 0.58 hrs.
∴ The average speed of the Paolo's train = \frac{70}{0.5833}
= 120 km/hr
Monika's train travels 684 km.
It leaves at 16:15 and arrives at 20:45.
Time take to complete its journey = 20:45 - 16:15
= 4 hours 30 minutes = 4.5 hrs.
∴ The average speed of Monika's train = \frac{684}{4.5}
= 152 km/hr
Difference of average speed between both trains = 152 - 120
= 32 km/hr
The speed of Monika's train is faster 32 km/hr.