Question

Debbie needs to fill juice cups for her little brother's birthday party. There are 20 juice cups and each juice cup holds 10 fluid ounces. The juice comes in 1-gallon bottles. How many 1-gallon bottles of juice will Debbie need to purchase?
(1 quart = 32 fluid ounces, 1 gallon = 4 quarts)

1 bottle
2 bottles
3 bottles
4 bottles

Answer 1

1 gallon = 4 qts

1 qt = 32 fl. ounces

 so 32 x 4 = 128 fl. ounce in a gallon

20 cups at 10 ounces each = 20*10 = 200 ounces needed

200/128 = 1.5625 gallons needed

she will need to buy 2 bottles