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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.
Your solution fails this example test:
assert.strictEqual(cookingTime("7500W", 0, 5, "600W"), "1 minutes 3 seconds");
Your solution returns 1'2", while correct answer is 1'3". In one place you handle rounding incorrectly, try to figure out where.