If a scooterist drives at the rate of 24 kmph, he reaches his destination 5 minutes late, and if he drives at the rate of 30 kmph, he reaches his destination 4 minutes earlier. Find how far his destination is.
There is something I don't understand about algebra: It has been around for thousands of years, yet no one has ever found out what the value of "x" or "y" really is.