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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Just saw that Blind4Basics wrote today a bit earlier: "x * 1.15 is failing while x + x*0.15 is passing. ..."
I discovered that for basic tests works Math.ceil(price * 1.15) and for random - Math.round(price * 1.15)
The language the OP attempted the kata with is JS.
would you explain why and which language, please?