Question

HELP?! PLEASE!! SUPER DESPERATE!! How many gallons of a 60% antifreeze solution must be mixed with a 60 gallons of 15% antifreeze to get a mixture that is 50% antifreeze? Use the six-step method.

Answer 1

bellamore

Middle SchoolMathematics 5+3 pts

x (.60) + 60 (.15) = (x+60) .50

distribute

.60x +9 = .5x +30

subtract .5x from each side

.1x +9 = 30

subtract 9 from each side

.1x = 21

divide by .1

x = 210

You will need 210 gallons of 60% antifreeze