YummyNoodles
New member
- Joined
- Mar 20, 2020
- Messages
- 10
Original Problem: A car radiator is filled with 5L of a 25% antifreeze solution. How many liters must be drawn off and replaced by a 75% antifreeze solution to leave the radiator filled with a 55% antifreeze solution?
I was a little confused by the wording of this problem so I need some help with setting up the equation. I interpreted it as the amount drawn is off the same as the amount of new solution added so I set c = L of solution drawn off & replaced, and set up the equation as 0.25(5) - c + 0.75(c) = 0.55(5) but ended up with a negative solution. Any tips on how to begin/set up would be appreciated.
I was a little confused by the wording of this problem so I need some help with setting up the equation. I interpreted it as the amount drawn is off the same as the amount of new solution added so I set c = L of solution drawn off & replaced, and set up the equation as 0.25(5) - c + 0.75(c) = 0.55(5) but ended up with a negative solution. Any tips on how to begin/set up would be appreciated.