What is the sap collected from each tree

5 gallons is your answer

we know that

total amount of sap =[3*(1/4)+2*(3/8)+4*(5/8)+1*(1)]

total amount of sap =[(3/4)+(6/8)+(20/8)+(1)]

total amount of sap =[(3/4)+(3/4)+(10/4)+(4/4)]

total amount of sap =[20/4]

total amount of sap =5 gallons

total of trees=10

[amount of sap collected from each tree]=total amount of sap/total of trees

[amount of sap collected from each tree]=5/10> 0.5 gallons per tree

the answer is

0.5 gallons