help please!
A pharmacist has two vitamin-supplement powders. The first powder is 20% vitamin B1 and 10% vitamin B2. The second is 15% vitamin B1 and 20% vitamin B2. How many milligrams of each of the two powders should the pharmacist use to make a mixture that contains 130 mg of vitamin B1 and 80 mg of vitamin B2?
any ideas on how to do this?
Lets say he took x milligrams of 1st and y mg of 2nd
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So composition of 1st powder has
Amount of B1
Amount of B2
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Composition of 2nd powder has
Amount of B1
Amount of B2
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Total composition of B1 and B2 are equated to the given amount of each
Solve these two equations to get x and y