Quinn started off with twice as much candy as denali but then ate 4 pieces . when quinn and denali put their candy together they now have a total of 50 pieces how many pieces did denali start with?

To answer this question you will use the relationship between Denali and Quinn's number of pieces of candy. Create an equation only using d (the number of pieces of candy Denali has).

Quinn's candy - (2d + 4)
Denali's candy - d

So, (2d + 4) + d = 50.

Solve for d.

3d + 4 = 50
3d = 54
d = 18 pieces