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- #1

A boat costs x to maintain and I and a friend decide to split the costs 60/40, where I put in 60% of the cost.

However, I will have the boat less than my friend, he will have it 3/8 of the time and I will have it 5/8 of the time.

So what is my actual cost on a weekly basis - it doesn't seem right to just multiply 60% by 5/8.