One type of granola has 30% nuts, by mass. A second type of granola has 15% nuts. What mass of each type needs to be mixed to make 600g of granola that will have 21% nuts?
Q. One type of granola has 30% nuts, by mass. A second type of granola has 15% nuts. What mass of each type needs to be mixed to make 600g of granola that will have 21% nuts?
Define variables: Let x be the mass of the first type of granola (30% nuts) and y be the mass of the second type of granola (15% nuts). We know the total mass of the mixture should be 600g. So, the equation is:x+y=600
Set up equations: Next, we set up the equation for the nut content. The total nut content in the final mixture should be 21% of 600g, which is 126g. The nut content from the first type is 0.30x and from the second type is 0.15y. The equation is:0.30x+0.15y=126
Solve equations: We can solve these equations simultaneously. From the first equation, express y in terms of x:y=600−x
Substitute values: Substitute y in the second equation: 0.30x+0.15(600−x)=1260.30x+90−0.15x=1260.15x=36x=240
Final solution: Substitute x=240 back into the equation for y:y=600−240y=360
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