Three friends own a lawnscape service. One of their biggest clients is a museum. When Kayden, Jaylen, and Zion work together they can mow the museum lawn in 3 hours. When Kayden works alone, he can mow the lawn in 6 hours. It takes Jaylen an hour more than Zion to mow the lawn. Write and solve an equation to determine how long it would take Jaylen and Zion to mow the lawn on their own. Show your work. ​