Problema Solution
How much 25% antifreeze and 50% antifreeze should be combined to give 40 gallons of 30% antifreeze?
Answer provided by our tutors
Let
x = gal of the 25% antifreeze
y = gal of the 50% antifreeze
x + y = 40
0.25x + 0.50y = 0.30*40
........
click here to see the system of equations solved for x and y
........
x = 32 gal
y = 8 gal
32 gallons of 25% antifreeze should be combined with 8 gallons of 50% antifreeze.