Question

Robert is driving 240 kilometers to the beach the distance Robert drives varies with the hours he drives he has driven 120 kilometers in 3 hours
(1)Find the r in the equation D= rt (distance = rate . Times
(2) keeping that pace , how long wil it take Robert to drive to the beach

Answer 1

Your question would be a bit clearer if only you'd punctuate that presentation:
Robert drives 240 km to the beach.
The distance he drives varies with / is dependent on the number of hours he drives.
Robert has driven 120 km in 3 hours.

Note that distance = rate (speed) * time.
We know how far Robert has driven: 120 km;
we know how long that took him.

Find his speed (rate). If d = r * t, then solve for the rate/speed.