Horace buys 2 3/4 pounds of blueberries for a pie.he needs 48 ounces of blueberries for the pie.how many more pounds of blueberries does he need to buy?

1 pound = 16 oz
2pound= 32 oz
3/4pound = 3 of 16/4= 3•4=12
He has 32+12 = 44 oz
He needs 48 so it needs 48-44= 4 more oz

Horace need to buy 0.25 more pounds of blueberry

Further explanation  

7 main quantities have been determined based on international standards, namely:  

1. Length, meters (m)2. Time, second (s)3. Mass, kilograms (kg)4. Temperature, kelvin (K)5. Light intensity, candela (cd)6. Electric current, amperage (A)7. Amount of substance, mol (m)

Mass is one of the principal quantities, which is related to the matter in the object  (how much matter is in an object)

The main mass unit consists of 7 units of other than other units of mass such as quintals, tons, pounds, ounces:  

Kilogram, kg  Hectogram, hg  Decagram, dag  gram, g  Decigram, dg  centigram, cg  milligrams, mg  

Each unit descends then multiplied by 10, and if one unit increases then divided by 10  

Conversion of other mass units:  

mg milligrams = 10⁻³ g  

kg kilograms = 10³ g  

µg micrograms (mcg) = 10⁻⁶ g  

Mg megagrams (tons) = 10 g  

ng nanograms = 10⁻⁹ g  

Gg gigagram = 10⁹ g  

g picogram = 10⁻¹² g  

For US standart mass , the most common units are

OuncesPoundsTons

The conversions between those units are :

1 pound = 16 ounces

1 ton = 2,200 pounds = 32,000 ounces

Horace buys pounds of blueberries

He needs 48 ounces of blueberries for the pie

we convert ounces :

48 ounces = 3 pounds

So Horace need more blueberries to buy :

= 0.25 pounds

Learn more  

book thickness in cm  

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The mass of A standard baseball  

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the quantity of 0.0075 meters expressed in centimeters  

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Keywords: mass, tons, pound, dump trucks

The answer to this is C