WHOEVER ANSWERS FIRST GETS BRAINLIEST!
Wilton drives an Uber. He charges $20 per hour. One passenger gave Wilton an additional tip of $10, which made the total he paid $90. How many hours did Wilton drive the passenger?

THESE ARE NOT ANSWERS BELOW. PLEASE SOLVE THEM ALL.

1. Define the unknown (variable) in the scenario and assign it a letter.

2.Using the variable you chose, write an equation to represent the amount of money Wilton earned on the trip (_________ = 90).

3. Solve for the unknown quantity.

PLEASE SOLVE THEM ALL, SHOWING YOUR WORK WILL BE VERY MUCH APPRECIATED.