94 - 4d + 6 + 5d = 207. what is the simplified version of the equeation?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

The sum of two numbers is 86, and their difference is 20. find the two numbers

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?