Two truckers leave from the same point driving in opposite directions, the first trucker driving at 62 miles per hour and the second at 66 mph. the first trucker has a one-hour head start. how long, after the first trucker leaves, will they be able to contact each other on their car phones if the phones have a 270-mile range?

1 hour 42 minutes

Step-by-step explanation:

Given: Speed of 1st trucker= 62 mph

           Speed of 2nd trucker= 66 mph

           Total distance need to cover to be in contact is 270 miles

           1st trucker start 1 hour ahead of 2nd trucker

Lets assume 2nd trucker take `x` hours to be in contact and 1st trucker take `(x+1)` hours.

We know, distance=

1st trucker, distance

                     ∴

2nd trucker, distance

                    ∴

Now, putting the values in an equation.

⇒

Opening the parenthesis to solve and subtracting both side by 62

⇒

∴ x= = 1 hour 42 minutes

∴ It will take 1 hour 42 minutes to be able contact each other after first trucker leaves.

the answer would be the last one (constat) she stays at the same rat every two mintues it goes up by 0.4

step-by-step explanation:

answer: -1

step-by-step explanation: