Answer:
56,000
Step-by-step explanation:
The scale drawing is a 1/40 ratio so you multiply 5 by 40 and you get 200. You do 200x280 and you get 56,000.
0.015 km/s
40 km/hr
0.015 ÷ (1/3600)
0.015 × 3600
= 54 km/hr
2/3 or .6 repeating
b