For the first column, add up 30 + 90 because you want to find the total.
30 + 90 = 120
Put 120 in the first cell.
For the second column, you want to subtract 125 - 30 to find how many want "Yes Blue" and "No Taxi".
125 - 30 = 95
Put 95 in the second cell.
For the first cell in the last column, add up 90 + 185 to get the total that want "No Bus".
90 + 185 = 275
Put 275 in the first cell of the last column.
For the second cell in the last column, use the answer we got for the first cell: 120, and add 120 + 180 = 300
Put 300 in the last cell.
