Current location - Training Enrollment Network - Mathematics courses - Chapter 7 Math Exercise 8.3 Question 7: Prepare 18kg containing 50% medicine with two kinds of potions with 30% and 75% contents. How much do I need to take each of the two potions?
Chapter 7 Math Exercise 8.3 Question 7: Prepare 18kg containing 50% medicine with two kinds of potions with 30% and 75% contents. How much do I need to take each of the two potions?
Solution: Let the first drug be x kg, and we can know that the weight of the second drug is (18-x) kg, so the total drug content is: 18*50%=9 (kg).
0.3*x+( 18-x)*0.75=9
Solution: x= 10
Answer: The first dose requires 10 kg, and the second dose requires 8 kg.
The landlord remembers to adopt it as a satisfactory answer, and he calculated it himself. O(∩_∩)O haha ~