Knock the can

This task is about adding scores together. 

Question 1Change answer

scores on cans at a stall
 
In a game at the school fair Keri scored the number of points shown on the four cans she knocked over.
a)  What was Keri's total score? 
 
b)  What is the total possible score if Keri knocks over all 10 cans? 
 
c)  What is the best possible score if Keri knocks over only half of the cans?