Find the area of the algebra tiles

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

The ratio of wooden bats to metal bats in the baseball coach’s bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?

Hurry if the population of of an ant hill doubles every 10 days and there are currently 100 ants living in the ant hill what will the ant population be in 20 days