Hillary and Charlene both drove from city a to city b. at 10 am., Hilary left city a and drove at an average speed of 120 km/h Charlene drove at an average speed of 144km/h and took 50 minutes. she arrived at city b at the same time as Hillary. find the time Charlene left city a.

Answer 1

since distance = speed * time,
d = 144 km/hr * 5/6 hr = 120km
So now you know how far Hillary drove. How long did it take her?
When did she arrive? Charlene left 50 minutes before that.

or, since both women drove the same distance, their drive times were inversely proportional to their speeds. (twice as fast takes half as long.)
So, if Charlene's drive time was t minutes, then
t/50 = 144/120

Answer 2

thank you so much for your help