7. On Monday, Tarek travelled by train from Manchester to London.
Tarek's train left Manchester at 08 35
It got to London at 11 05
The train travelled at an average speed of 110 miles per hour.
On Wednesday, Gill travelled by train from Manchester to London.
Gill's train also left at 08 35 but was diverted.
The train had to travel an extra 37 miles,
The train got to London at 11 35
Work out the difference between the average speed of Tarek's train and the average speed
of Gill's train.