3000 ÷ 200 = 15 (minutes)

Parking for 2 minutes, delay (i.e. less travel):

200× 2 = 400 meters

Every minute 100 meters above, the time to arrive on time after meeting an acquaintance is:

400 ÷ 100 = 4 (minutes)

That is, he arrived on time four minutes after meeting an acquaintance.

Xiao Wang met an acquaintance when he left the factory:

(200+ 100) × 4 = 1200 (m)