Question

a sailboat started its journey at 6:30 am and reached the destination at 11:45pm. If the distance of the journey is 1276.5 miles, what is the sailboats average speed

Answer 1

Answer:

74 mph

Step-by-step explanation:

we know that

To find out the average speed, divide the total distance by the total time

Let

s ----> the speed in mph

d ---> the distance in miles

t ----> the time in hours

so

$s=\frac{d}{t}$

step 1

Find the total time

A sailboat started his journey at 6:30 am and reached his destination at 11:45 pm

so

from 6:30 am to 12:00 pm ----> there are 5 hours + 30 minutes=5.5 hours

from 12:00 pm to 11:45 pm ----> there are 11 hours + 45 minutes=11.75 hours

The total time is

$5.5+11.75=17.25\ hours$

step 2

Find the average speed

$s=\frac{d}{t}$

we have

$d=1,276.5\ mi$

$t=17.25\ hours$

$s=\frac{1,276.5}{17.25}= 74\ mph$