Plz help it's due tomorrow​

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

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.