3 moon + 1 star = 29 1 moon +1 moon = 15 Find value of 1 moon​

Passengers usually start to board their flights 1 hour before the scheduled take off time. the gate will be closed 15 minutes before the takeoff time. jack’s plane is scheduled to take off at 12: 05 a.m. if he arrives at the gate at 11: 45 p.m., can he board the flight?

What is the value of x in the diagram below?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup