allegansveritatem
Full Member
- Joined
- Jan 10, 2018
- Messages
- 962
How to set this up? "The RDA of zinc is 15mg; the RDA of ascorbic acid is 45mg..."
How to solve this with two systems of equations?:
The RDA of zinc is 15mg
The RDA of ascorbic acid is 45mg
Health bar A has 30 mg of ascorbic acid and 6 mg of zinc
Health bar B has 15mg of ascorbic acid and 3mg of zinc
How many oz of each must one eat to have exactly the RDA fore ascorbic acid and zinc?
I set this up thus:
x= oz of A Y= oz of B
30x + 15y = 45
6x + 3y = 15
This system results in a false statement thus:
30x + 15y = 45
-5 (6x) + -5 (3y) = -5 (15) which results in:
0 = -35.
Did I set this problem up wrong? Or is this saying that the problem is not solvable. Note that what is being asked is how much of a combination of the two bars ( stated thus: so much of bar A and so much of bar B) must one eat to get the exact requirements.
How to solve this with two systems of equations?:
The RDA of zinc is 15mg
The RDA of ascorbic acid is 45mg
Health bar A has 30 mg of ascorbic acid and 6 mg of zinc
Health bar B has 15mg of ascorbic acid and 3mg of zinc
How many oz of each must one eat to have exactly the RDA fore ascorbic acid and zinc?
I set this up thus:
x= oz of A Y= oz of B
30x + 15y = 45
6x + 3y = 15
This system results in a false statement thus:
30x + 15y = 45
-5 (6x) + -5 (3y) = -5 (15) which results in:
0 = -35.
Did I set this problem up wrong? Or is this saying that the problem is not solvable. Note that what is being asked is how much of a combination of the two bars ( stated thus: so much of bar A and so much of bar B) must one eat to get the exact requirements.