Matthew goes hiking every 60 days and swimming every 18 days. He did both kinds of exercise today. How many days from now will he go both hiking and swimming again?

Carli has 90 apps on her phone. braylen has half the amount of apps as theiss. if carli has three timesthe amount of apps as theiss,how many apps does braylen have? let b represent the number of braylen's apps and t represent the number of theiss's apps.