Paulo drove 75 km from Tanauan, Batangas to Lucban, Quezon to visit his cousins.
His average speed for the trip to Lucban was 10 km/h faster than on his way back to
Tanauan, and as a result, his return trip took 2 hours longer. What is his average
speed for the trip to Lucban? Write the equation that will represent the function.