Question 156960
Remember: 1 US gallon = 128 ounces(oz), see www.onlineconversion.com
But you have 4 gallons: {{{4*128=512oz}}}, total volume of juice
You take out {{{15*4=60oz}}} of juice, so the remaining will be:
{{{((512-60)/512)100}}}=88.28% remaining out of the total 512 0z
OR, in 1 gal=128 ounces:
{{{((128-60)/128)100}}}=53.125% remaining in 1 gallon
Thank you,
Jojo