multiply the number of blocks by number of people per block
Then divide number of pizza places by that
1st block:
15 blocks x 220 people = 220*15 = 3300
26 pizza places = 26/3300 = 0.0078
2nd Block
175 * 22 =3850
33/3850 = 0.0085
the first one is just under 0.008 but if you round it to 3 places it is 0.008
the 2nd are is just over 0.008 ( 0.009 if you round it to 3 places)
so they would be better off building in the first area, if they build at all.