Linear System HELP!
“Trish has a jug of contaminated water that she knows is only 75% clean. She also knows that the water will be safe to drink if she can mix it with 100% clean water so that it is 97% clean. How much clean water (100% clean) would Trish need to mix with the contaminated water in order to get 1 gallon of drinkable water?”

A student used the following system of equations to model the situation given above. Which of the statements is true about the system of equations the student used?

Question

Linear System HELP!
“Trish has a jug of contaminated water that she knows is only 75% clean. She also knows that the water will be safe to drink if she can mix it with 100% clean water so that it is 97% clean. How much clean water (100% clean) would Trish need to mix with the contaminated water in order to get 1 gallon of drinkable water?”

A student used the following system of equations to model the situation given above. Which of the statements is true about the system of equations the student used?

anonymous · Answer

$$75x+100y=97(1)$$
$$x-y=1$$