Maria left the hardware store and traveled toward the train station at an average speed of 20 mph. Joe left sometime later traveling in the same direction at an average speed of 50 mph. After traveling for two hours Joe caught up with Maria. How long did Maria travel before Joe caught up? Answer is: 5 hours
Please explain and show how it’s 5 hours.

the answer will be the last one

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.