Problema Solution
Chelsea left the White House and traveled toward the capital at an average speed of 34 km/h. Jasmine left at the same time and traveled in the opposite direction with an average speed of 65 km/h. Find the number of hours Jasmine needs to travel before they are 59.4 km apart.
Answer provided by our tutors
Let
v1 = 34 km/h Chelsea's speed
v2 = 65 km/h Jasmine's speed
d = 59.4 km
t = the time of the travel
Since speed = distance/time follows distance = speed*time:
v1t + v2t = d (we add the distances since they travel in opposite directions)
3t + 65t = 59.4
........
click here to see the equation solved for t
........
t = 0.87 hr
t = 0.87*60 min
t = 52 min approximately
Jasmine needs to travel 52 minutes before they are 59.4 km apart.