Bill and greg are walking in opposite directions with speeds of 45 and 75 feet per minute. when they started, the distance between them was 20 feet. what will be the distance between them in 2.5 min?

Bill moves at 45 feet per minute and Greg 75 per minute and starts with a constant of 20 feet from them.

Let X be the number of minutes

Bill*Minutes +Greg*Minutes +20 = total distnce between

45x + 75x +20 = d

Plug in 2.5 for both values of x

45(2.5) + 75(2.5) + 20 =d

Multiply values by 2.5

112.5 + 165 + 20 = d

add together 

Distance = 297.5 feet apart