Tickets to a movie cost $9 for each adult and $4.50 for each child. molly purchased 11 tickets for $72. how many adult and how many child tickets did she purchase? molly purchased adult tickets and child tickets.

Can some one me with these questions

Ihonestly have no clue if it's each or none.

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.