How to solve this ? the question asked, the distance between two houses p& q is 200 kilometer. joe travel by car from p to q at average speed of x km/h

a) write down an expression in terms of x for the number of hours he took to travel from p to q.

b) he returned from q to p at an average of (x + 5) km/h. write down an expression in terms of x for the number of hours he took to travel from q to p

c) the total time he took to go from p to q & to return from p to q was 8 hours