Question

Jack’s sister is coming to visit him and parks in the hospital car park.

Answer 1

Lets gather some info...
white cars (level 1) = 230....(level 2) = 120...total of (230 + 120) = 350
silver cars (level 1) = 110....(level 2) = 70...total of (110 + 70) = 180

so there are (350 - 180) = 170 more white cars then silver cars.