Cost for 1kg of A is 260 USD and 1kg of B is 380. AB is made by mixing A and B. If 1kg of AB costs 300, what was the ratio that A and B has mixed?
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Cost for 1kg of A is 260 USD and 1kg of B is 380. AB is made by mixing A and B. If 1kg of AB costs 300, what was the ratio that A and B has mixed?
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