Fields billy is driving to see his grandmother along they have to drive 866 miles if they have gone 269 miles so far how much farther do they have to drive

3.5x = 25 + 3x

Step-by-step explanation:

Let x be the speed in miles per hour of both red car and blue car,

We know that,

Distance = speed × time,

If time taken by red car = 3 hours,

Then the distance travelled by red car = 3x

Now, if the time taken by blue car = 3.5 hours,

Then the distance travelled by blue car = 3.5x

According to the question,

Distance covered by blue car = 25 miles + Distance travelled by red car

3.5x = 25 + 3x

Which is the required equation.