We must know what 80% of 500 is:
500 * 80% = 400
Ayden did meet is goal, because his goal was 400 and he painted 415 squares (Which is beyond his goal).
Ayden meet his goal, because I paint 83% of the house that is greater than 80%
to know the part that he painted with respect to the total we have to divide the amount that he paint by the total amount
415ft² / 500ft² = 0.83
if we want it as a percentage we simply multiply it by 100
0.83 * 100 = 83%
now we compare the percentage that I paint with what was his goal
83% > 80%
If you have any questions let me know. :)
500 square meters of a house's wall...