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)
Debbie will need to buy 2 gallons of juice.
Number of juice cups mentioned in question = 20 Quantity of juice that each juice cup can hold = 10 fluid ounces Quantity of fluid ounces that 20 juice cups require = 20 * 10 fluid ounces = 200 fluid ounces. Now 32 fluid ounces = 1 quart Then 200 fluid ounces = 200/32 quart = 6.25 quart Again 4 quart = 1 gallon So 6.25 quart = 6.25/4 gallon = 1.56 gallon So we see that 1.56 gallon of juice is required by Debbie. As the juice comes in 1 gallon bottles, Debbie needs to order 2 bottles of juice.