Question

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.

Answer 1

Part 1 :Using a variable, write an expression that describes the total amount of money earned by both boys at the end of the month.

Let the number of lawns mowed be = x

Earnings of Amar = 20x

Earnings of Sang = 15x

So total earnings are =
`20x+15x`

Part 2: 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?

Total number of lawns mowed by each are = 10

Amar earned =
`20*10=200`

Sang earned =
`15*10=150`

So, total money earned =
`200+150` = $350

No, they don't have enough money for their trip. They are short of $50.