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.