Nadia and Kyle shared the driving on a 1250- km trip from Edmonton to Vancouver.Nadia drove for 5 hours and Kyle drove for 8 hours.Nadia drove 10km/h faster than Kyle. How fast did Kyle drive?
1 Answer
Kyle drove (approximately)
Explanation:
Let
Since Nadia drove for 5 hours at a speed of
she drove a distance of
Since Kyle drove for 8 hours at a speed of
he drove a distance of
The total distance driven was
and therefore:
[1]
We are told
[2]
Substituting
[3]
[4]
[5]
[6]
(The answer would have been "nicer" if Nadia had driven 10 km/hr slower than Kyle).
