because that's the scale the map is drawn at...
1,000.
If 1 inch equals 400 miles on the map, then 2.5 inches on the map would equal 1000 miles in real life. This is calculated by multiplying the scale factor (1 inch equals 400 miles) by the distance on the map (2.5 inches).
400 x 2.5 = 1000 miles
1,000 miles. 400+400=800+200=1,000
One-and-a-half times 400
2.5 x 400 = 1,000 miles
1000.
1000
Assuming you mean "two and a half inches"? The answer is 1000 miles
1/400
1 inch would equal 14 miles. This is because the question is asking for a comparison between 1 inch and two different distances, 14 miles and 400 miles, and the logical interpretation is that 1 inch is being compared to 14 miles.
If 400 miles is represented by 1 inch, then 2.5 inches represents 2.5 x 400 = 1000 miles.