Alan takes 3 minutes to draw a picture. Beatrice takes 4 minutes to draw a picture. If Alan and Beatrice start drawing pictures at the same time, how long will they draw before they can complete a picture at the same time?

Step-by-step explanation:

Alan draws a picture in 3 minute

In one minute he draws:

Similarly, Beatrice draws

Together the draw in one minute:

To complete the picture they need:

zero

step-by-step explanation:

f(2)= x-2

plug in the 2 in the "x"

f(2)=2-2

f(2)=0