Cesar is planning a 4-day trip to visit his friend at a college in another state. It will cost him $187 for airfare, $52 for local transportation, and $55 per day for food. He has $189 in savings and can earn $45 for each lawn he mows. How many lawns must he mow to have enough money to pay for the trip?

if $187 pays for one way, then he will have to do 13.667 lawns. If the airfare ($187) caters for both to and from his friend college, he will do 9.47 lawns

Step-by-step explanation:

Find Total expenses:

Food : $55*4 days = $220

Transport: $52*4 days = $208

Airfare (to and fro): $187*1 = $187

Airfare (one way only): $187*2 = $374

IF $187 airfare will pay to go and come back, He will spend:

220 + 208 + 187 = $615.

Therefore, find the remaining amount he has to work for by subtracting total savings from total expenses.

i.e, $615 - 189 = $426.

If each lawn is equal to $45, Then he will be required to lawn

Number of lawns required = total cash required divide by amount of each lawn.

i.e $426 /45 = 9.47 lawns.

IF $187 airfare caters for one way flight He will spend:

$187 * 2 = $374 (on airfare).

Thus total expenses:

Food+transport+airfare = total

220 + 208 + 374 = $802.

Hence, subtract the saving from the total to get the remaining amount.

$802 - $189 = $613

Total number of lawns = total amount need / amount per lawn

i.e $613 / #45 = 13.667 lawns.

Thanks