Four swords

Obelix has three helmets, four swords, and five shields. How many words must you make at the blacksmith forge Metallurgix to be able to walk another 90 days in unique armor?

Correct answer:

n =  2

Step-by-step explanation:


3·(4+n)·5=90

15n = 30


n = 30/15 = 2

n = 2

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