Problema Solution
Chelsea left the white house and traveled toward the capital at an average speed of 34km/hr. Jasmine left the house at the same time and traveled in the opposite direction with an average speed of 65km/hr. Find the number of hours Jasmine needs to travel before they are 59.4km apart.
Answer provided by our tutors
let
v1 = 34 km/hr the average speed of Chelsea
v2 = 65 km/h the average speed of Jasmine
t = the number of hours they travel
d = 59.4 km the total distance between them after t hours
since average speed = distance/time we have distance = time*average speed that is:
v1*t + v2*t = d
34t + 65t = 59.4
by solving we find:
t = 0.6 hr
t = 0.60*60 min
t = 36 min
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Jasmine needs to travel 0.6 hours or 36 minutes.