Carrie has 140 coins. she has ten times as much coins as she did last month. how many coins did carrie have last month

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?