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

2899 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Show that ((sqrt(18)+sqrt(2))^2)/(sqrt(8)-2) can be written in the form a(b + 2) where a and b are integers.


I need help understanding simultaneous equations with more than two variables, can you please help?


Expand and simplify (x + 5)(x – 1)


Factorise 3x^3y^2-6x^2y+9xy


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning