Amar and sang mowed lawns to earn money to go on a trip at the end of the month. they both mowed the same number of lawns. amar earned $20 for each lawn he mowed in his neighborhood. sang earned $15 for each lawn he mowed in his neighborhood. ⦁ using a variable, write an expression that describes the total amount of money earned by both boys at the end of the month. define what the variable represents. ⦁ amar and sang mowed 10 lawns each by the end of the month. they need $400 for a summer trip. do they have enough money for their trip? show or explain your work.