Question

It took Brian 3 hours to drive to a rock concert. On the way home, he was able to increase his average speed by 23 mph and make the return drive in only 2 hours. Find his average speed on the return drive.The equation from part 2 is 3x=2(x+23)Step 3 of 3: Solve the equation found in part 2 for x. Use this information to answer the given word problem.

Answer 1

69 mph

Explanation:

The equation that represents this situation is:

`3x=2(x+23)`

We are required to determine Brian's average speed on the return drive.

To do this, we first find the value of x.

Using the value of x, we find the average speed on the return drive.

`x+23=46+23=69\text{mph}`

Therefore, the average speed on the return drive will be 69 mph.