Answer: 79 ounces = 2 quarts and 15 ounces.
Explanation:
1) The question is: 1 gallon - (1 quart + 1 pint + 1 ounce)
2) To add and subtract those amounts you have to convert all to one same unit.
3) Since the least unit is ounce, I will convert gallon, quart and pint to ounces.
4) Conversion factors:
1 gallon = 4 quart
1 quart = 2 pints
1 pint = 16 ounces
5) Conversions:
i) 1 gallon × 4 quart / gallon × 2 pint / quart × 16 ounce / pint = 128 ounces
ii) 1 quart × 2 pint / quart × 16 ounce / pint = 32 ounces
iii) 1 pint × 16 ounce / pint = 16ounces
4) Subtract:
1 gallon - (1 quart + 1 pint + 1 ounce) = 128 ounces - (32 ounces + 16 ounces + 1 ounce) = 128 ounces - 49 ounces = 79 ounces ← answer
You can convert it to a mixed number in this way:
79 ounces × 1 quart / 32 ounces = 2. 46875 quarts
0.46875 quarts × 32 ounces / quart = 15 ounces
Then, 79 ounces = 2 quarts and 15 ounces.
