Harry drives from Exeter to London in 4 hours at an average speed of 70km/h. Ron drives from Exeter to London in 5 hours. (a) Assuming Ron took the same route as Harry, calculate Ron's average speed.

The distance from Exeter to London can be calculated using the information about Harry's journey. Average speed = Distance/Time so Distance = Average speed x Time. This means that the distance from Exeter to London is 4 x 70km = 280km. Using this answer, the equation can be used again to calculate Ron's average speed. Average speed = 280/5 = 56km/h. There is also a short way to answer this question. Since we know the distance travelled is the same for both journeys, and Ron's journey is 1.25x longer than Harry's (5/4 = 1.25); we can simply divide Harry's average speed by 1.25 to obtain the answer.

Answered by James F. Maths tutor

2539 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Circle with centre C, and points A,B,D and E on the circumference of the circle. BD is the diameter of the circle. Angle CDA is 18 deg and angle AED is 31 deg. Find angle EDA.


A curve has an equation of y=2x^2 + 7x -8 . Find the co-ordinates of the turning point


Make n the subject of the formula: m = 5n - 21


Convert 0.1727272... to a fraction in its lowest terms.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences