There are thirty houses on a street. twenty-four of them have pumpkins on their porch. what percent do not have pumpkins on there porch?

20%

Step-by-step explanation:

if you divide 100 by 30 you get 3.33333

then you times that by the number of houses that do have pumpkins and get 80%

100-80 = 20

(also there and 5 sets of 6 in 30 and 1/5 of a number is always 20%)