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.

JF
Answered by James F. Maths tutor

2594 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Samuel had 3 piles of coins, I, II and III. Altogether there was 72p. Pile II had twice as much as pile I. Pile III had three times as much as pile II. How much money was in Pile III?


Solve the equation 10x + 4 = 12x + 2


Convert 0.2m^2 to mm^2


Finding out the length of one side of a triangle


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