Answer :
If the amount of 5% is x, the amount of 2% is 360-x
.05x + .02(360 - x) = .04 x 360
.05x + 7.2 -.02x = 14.4
.03x = 7.2
x = 240
240 gallons of 5%
120 gallons of 2%
.05x + .02(360 - x) = .04 x 360
.05x + 7.2 -.02x = 14.4
.03x = 7.2
x = 240
240 gallons of 5%
120 gallons of 2%