When the charity collected all of its 10 cans from my convenience stores they contained 80% more pennies and nickels. If the combined value of the pennies and nickels was $22.10 how many Nickels did the tin can contain?

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?