While traveling to and from a certain destination, you realized increasing your speed by 40 mph saved 4 hours on your return. the total distance of the round trip was 640 miles. construct an equation that relates the speeds of the two legs of the trip. use x to represent the speed on the second leg of the trip.

An equation that relates the speeds of the two legs of the trip

Explanation:

Given, we have to use x to represent the speed on the second leg

Speed on first leg when increasing your speed by 40 mph will be (x-40)

Distance is given as 640 miles and time is calculated as  

According to the question, increasing speed saved four hours

Therefore, the equation that relates the speeds of the two legs of the trip will be

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

75%

step-by-step explanation: