Math question I struggled on looking for answer

Question

You and your friends decide to go canoeing upstate. You have two options, Solomon’s Super Canoes and the Kevin Canoe Enterprise. Solomon’s company charges a $50 fee and then $10 per hour. Kevin’s company charges a $30 fee and then $20 per hour. Determine how long would it take in hours for the companies to charge the same amount algebraically

Answer 1

Let y = cost and x = hours rented. For Solomon's Super Canoe:

y = 10x + 50

For Kevin's:

y = 20x + 30

Set the costs equal and solve for x. The units are hours.