The question type below uses the sum of 2 to describe the relationship between 3 objects.
Such questions often appear in P4 exam papers in Section C.
A more complex version of this question can also be found here.
Abigail, Beth and Candice were given a sum of money to share. The total of Abigail and Beth's share is $35. The total of Beth and Candice's share is $26. The total of Abigail and Candice's share is $31
How much did the 3 girls have altogether?

If the above question is easy, try to do the more challenging question below.
The question below will randomize with different numbers every hour.
Copy below question down before making attempt.