#22- Local, Must Be True

[kliu49]

Hi, In this scenario, if the question had asked about C1, would it be correct to say that C1 must have three materials?

My logic is that since P must be in C1, then C1 must also have 2 other materials to accommodate whatever materials C2 has. This also means that C2 can only have 2 materials.

Thanks!

[KelseyWoods]

Hi kliu49!

Yes, if C3 recycles glass, then C1 must have P + whichever two materials C2 has, for a total of three materials. And, as you also deduced, C2 can only have 2 materials in this scenario. Good job!

Hope this helps!

Best,
Kelsey