Problema Solution
Leanne and Jenn are on a road trip to Ohio, which is 600 miles away. They have been driving for 3
hours, and they have gone 240 miles so far. How much longer do they have to drive to get to Ohio?
Answer provided by our tutors
let
v = the speed of the car
t = the time needed to drive the 600 miles
t1 = 3 hour
d1 = 240 miles
the speed = the total distance passed/the total time
v = d1/t1
v = 240/3
v = 80 miles/hour
d2 = d - d1 = 600 - 240 = 260 miles left to pass
let t2 = the time they need to finish the trip
t2 = d2/v
t2 = 260/80
t2 = 3.25 hours = 3 hours 15 min
they need to drive 3 hours 15 min more.