Question

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.
can u help and explain pls

Answer 1

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.

Learn more about speed : https://brainly.in/question/11327833