Katy Perry’s swimming pool is currently empty but is filling at a rate of 6 cubic feet per hour. Lady Gaga’s swimming pool currently contains 180 cubic feet of water but is draining at a rate of 8 cubic feet per hour. After how many hours will both of their pools have the same amount of water? Adam Levine bank account is $160 overdrawn so he deposits $8 each day. Rob Lowe’s bank account is not overdrawn and currently has a balance of $180 and he deposits $6 each day. After how many days will their bank accounts have an equal amount of money?

Beyonce’s fish tank holds 180 gallons of water and is leaking at a rate of 8 gallons per day. Jay Z’s fish tank holds 160 gallons of water and is leaking at a rate of 6 gallons per day. At how many days will both fish tanks have an equal amount of water in them?

Selena Gomez’s gym membership costs $180 to sign up and then charges $6 for each visit. Demi Lovato’s gym membership costs $160 to sign up and then charges $8 for each visit. At how many visits will they have spent the same amount of money?

Justin Bieber’s sand castle is 180 cm tall but the wind is blowing away sand at a rate of 8 cm per minute. Taylor Swift’s sand castle is 160 cm tall and she is adding sand to it at a rate of 6 cm per minute. After how many minutes will their sand castles be at an equal height?