A provider of field products has three types of fertilizers: G1, G2, and G3. They have nitrogen contents of 30%,20%, and 15 %, respectively. It has been planned to mix them to obtain 600 pounds of fertilizer with a nitrogen content of 25%. This mix must contain 100 more pounds of the G3 type than the G2 type. How many pounds have to be used from each type?

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Asked Nov 10, 2019
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A provider of field products has three types of fertilizers: G1, G2, and G3. They have nitrogen contents of 30%,20%, and 15 %, respectively. It has been planned to mix them to obtain 600 pounds of fertilizer with a nitrogen content of 25%. This mix must contain 100 more pounds of the G3 type than the G2 type. How many pounds have to be used from each type? 

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25 -150 pounds The amounts of 100 The total nitrogen in the mixed fertilizer is 600x nitrogen in x pound of G is 0.30x,, x, pound of G, is 0.20x2, x3 pound of G is 0.15x3. Thus, 0.30x 0.20x, 0.15x3 =150

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