A chemist needs to mix a 75% saltwater solution with a 50% saltwater solution to obtain 10 gallons of a 60% saltwater solution.
a. Write a system of equations to find how many gallons of each solution must be used.
b. Graph both equations on the TI calculator and find the intersection point. Report the equations you put in for Y1 and Y2 and your Window settings.
c. Solve the system using the substitution method. Does this answer match the answer you got on your graphing calculator?
d. Solve the system using the addition method. Compare your answer to parts b and c.
e. Which method do you prefer for this problem?