Pls help I will mark brainlist if correct !! :)

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

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Ineed someone to me answer my question i have to have this done and knocked out