A dairy farmer wants to mix a 40% protein supplement and a standard 20% protein ration to make 1000 pounds of a high-grade 35% protein ration. How many pounds of each should he use?

Answer 1

40 is within 5 of 35

20 is within 15 of 35

the farmer needs 15/5= 3 times as much 40% as 20%

3/4 of 1000 = 750 pounds of 40%

250 pounds of 20%

.2(250)+.4(750) = 50+300= .35(1000)= 350