At sami's shoe warehouse, it takes fraction 4 over 5 of a day to complete fraction 1 over 10 of an order of sneakers. at this rate, how long will it take to complete the entire order of sneakers?

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?