At the movie theatre, child admission is $5.40 and adult admission is $9.00. On sunday twice as many adult tickets as child tickets were sold, for a total sales of $608.40. How many child tickets were sold that day?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?