Answers inconsistent?

[blxebells_clare]

In the first image, it states that the answer to the question is 20, however in the end of the video, it says the answer is 15?

[Legendaryboy991]

Im working on the same module ill help u when i figure it out

[Legendaryboy991]

Weird...

[RZ923]

@blxebells_clare I can't remember which question is it, but you can try contacting @debbie or another mod.

[professionalbronco]

@blxebells_clare This is not an error. I think he was trying to solve a simpler problem and then solve the original one.