Answer:
5 hours 30 minutes
Step-by-step explanation:
Truck one is traveling south at 59 mph
It'd distance can be expressed as
d = 59t with d being the distance traveled, 59 is the speed, and t is
the number of hours it traveled for
Truck two is traveling north at 62 mph
It'd distance can be expressed as
d = 62t with d being the distance traveled, 62 is the speed, and t is
the number of hours it traveled for
We want their combined distance to be 665.5, so use the equation
59t + 62t = 665.5 and solve for t
121t = 665.5 (combine like terms on the left)
t = 665.5/121 (divide be 121 on both sides to isolate the
variable)
t = 5.5 (simplify)
t = 5 hours 30 minutes (0.5 hours is 30 minutes)
