In 1927, Charles Lindbergh was the first person to fly nonstop across the Atlantic Ocean. Today, Commercial airliners fly from N

Question

4 years ago

12

In 1927, Charles Lindbergh was the first person to fly nonstop across the Atlantic Ocean. Today, Commercial airliners fly from N

ew York to Paris five times as fast, or 400 miles/hour faster than Lindbergh's plane.
a. at what speed did Charles Lindbergh''s plane fly?
b. at what speed do commercial airplanes fly today?

PLZ show work on both

Mathematics

1 answer:

mamaluj [8] · Answer 1 · 2022-01-16T07:57:54+03:00

Answer:

a. 100 mph

b. 500 mph

Step-by-step explanation:

a.

Let the speed of Lindbergh's plane be x.

Today's planes are 5 times faster, so their speed is 5x.

Today's planes speed is 400 mph faster than Lindbergh's speed.

x + 400 = 5x

5x = x + 400

4x = 400

x = 100

Lindbergh's speed was 100 mph

b. 5x = 5 * 100 = 500

Today's planes fly at 500 mph