There are 12 pencils.
Red pencils + Blue pencils = 12
There are twice as many red pencils as blue pencils
Red pencils = Blue x 2
Substitute Red Pencils in the first question with blue x 2
So the first equation is 2 x blue + blue = 12
This will equal 3 blues = 12
Divide both sides by 3
Blues = 4 pencils
Reds = 2 x blues
Reds = 2 x 4
Red = 8 pencils
