Alright, lets get started.
In his first trip, Mr. Paul drove from drake to clay.
He drove 312 miles, took a break, and then drove 244 miles to clay.
It means the total distance between Drake to CLay will be
miles.
On his trip back to drake from clay, he drove 305 miles before he took a break.
So, teh remainig part of his return trip will be =
miles
He drive 251 miles the second part of his return trip : Answer
Hope it will help :)