QUESTION: Abby ate 4/5 of her hotdog for lunch. sam had the same hot dog for lunch and ate 16/20 of it Did they EAT THE SAME AMOUNT?
The fraction 4/5 is the same as the fraction 16/20, so they both ate the same amount.
N.B. 16/20 = (4*4)/(4*5)
In the fraction (4*4)/(4*5), divide top and bottom by 4 to give (4/5)