Fran can wash a car in 30 minutes. gail can wash the car in 40 minutes. if they work together, can they wash the car in less than 16 minutes?

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c