tethega

In music, a chord is a group of notes sounded together. Chords are usually used as the basis for harmonies and typically (but not always) consist of three or more notes.

Your problem is asking us to divide 20 by 1/4.

To divide by fractions, you multiply the number by the reciprocal (the reciprocal is the number you multiply a number by to get 1) of the fraction. 

(20)/(1/4) turns into (20/1)*(4/1). 

Multiply the fractions out and you get 80/1, so your answer is 80 portions of apples.

Another way to do your problem could be to convert 1/4 to 0.25, and then compute 20/0.25 = 80.