2. For her chemistry experiment, Marisol needs 2 liters of a 50% alcohol solution. The lab has two containers, one with 40% alcohol solution and the other with 80% alcohol solution.
i cant figure out the linear equations
Stacey Warren - Expert brainly.com
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given 40% alcohol and 80% alcohol solution we would then have
ok thank you i had that same answer i just wasn't sure if it was right :)
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so would x and y both equal 1? @reeses
its a system of equations so solve for x for one equation and plug it into x for the other equation then the value get for x you plug it back into the first equation then solve for y :)
Let the amount of 40% solution be a and 80% solution b.
so, 0.4a + 0.8b = 0.5(a + b)
Now, a + b = 2
=> 0.4a + 0.8(2 - a) = 0.5(2)
i.e. 1.6 - 0.4a = 1
so, 0.4a = 0.6
=> a = 1.5 and b = 0.5
Hence, 1.5 litres of 40% solution needs mixing with 0.5 litres of 80% solution to give a 2-litre, 50% solution