Answer:
56 lawns.
Step-by-step explanation:
Number of lawns he needs to mow:

Rounding up to nearest whole number: 56
He needs to mow at least 56 lawns.
If you put in n the calculator you should get the answer very easily. What i got is 3.734111864 im not sure if its correct tho
~2 boxes
If a month is about 31 days 1/8 of that would be ~31/8
That number can be rounded to 4
If 1/4 of a box is eaten even 4 days, one box will be eaten after 16 days
1 box in 16 days = 2 boxes is ~31 days
~ = about
divide 804 by 2 answer will be 402
add 54 plus 402 your answer will be 456 which is the amount of cheeseburgers.
then take away the combined amount by 456 and your answer will be 348 which is the amount of hamburgers.
What is the difference between each month?
That is what your answer will be.