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A flight is plotted on a map having the scale 1 inch equals 400 miles on the map it is 9 1/2 inch from point a to point B if a plane flies this distance at the speed of 300 miles how long will the trip take

Respuesta :

jcherry99

Answer:

12 hours and 40 minutes

Step-by-step explanation:

There are really 2 questions here.

One

1 inch / 400 miles = 9 1/2 inches / x            Cross multiply

1*x = 400 * 9.5

x = 3800

Two

The plane goes 300 miles / hour

d = r * t

d = 3800 miles

r = 300 miles / hour               Substitute

3800  = 300 * t                      Divide by 300

t = 3800 / 300

t = 12 2/3 hours

1 hour = 60 minutes

2/3 hour = y

y = 2/3 * 60

y = 40 minutes

Total time = 12 40 minutes or 12.666666 hours.

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