Lisa, Ayda, Nancy, and Chrystelle are best friends. They all love to go to the movies. After they see a movie they always save their tickets. Lisa has 10 movie tickets. Ayda has 4 less tickets than Lisa. Nancy has 3 times more tickets than Ayda. Chrystelle has 9 more tickets than Nancy. Each movie ticket costs $8.
Part A: How many movie tickets does Chrystelle have?
Part B: All together, how much money did the girls spend on movie tickets?