Answer:
 Percentage of apples ate by Alison = 35 %
Step-by-step explanation:
 Percentage of a process = (Number of process in favor / Total number of processes) x 100
 Total number of apples in the hand of Alison = 20
 Total number of apples ate by Alison = 7
 Percentage of apples ate by Alison = ( Total number of apples ate by Alison/Total number of apples in the hand of Alison) x 100
 

 Percentage of apples ate by Alison = 35 %