Earl wants to earn enough money to purchase a bike that costs $515. For every lawn he mows he earns $25 and then gets a daily bonus of $15. What is the minimum number of lawns he would need to mow in 5 days to have enough money to buy the bike?

Earl will mow ≥ 18 lawns in five days

Step-by-step explanation:

cost of bike / expected amount = $515

Daily bonus earned = $15

Bonus earned in 5 days = $15 * 5 = $75

Remaining amount would be = expected amount - bonus earned in 5 days

                                                 = $515 - $75 = $440

The amount remaining will be worked for in five days

1 lawn = $25

X lawns = $440

cross multiply

$25 x = $440 therefore x = = 17.6 lawns

In five days Earl will have to mow a minimum of 18 lawns to have a enough money to buy the bike