Brandon bought 14 2/5 pounds of clay to build a volcano for his science project. He used 10 1/2 pounds of the clay on his project. How many pounds of clay does he have left?
3 1/10
3 2/5
3 9/10
3 1/3

Respuesta :

Correct answer is 3 1/3 
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Answer:

[tex]3\frac{9}{10}[/tex]

Step-by-step explanation:

First he has [tex]14\frac{2}{5}[/tex]pounds and then he used [tex]10\frac{1}{2}[/tex] pounds so now he have left:

[tex]14\frac{2}{5} - 10\frac{1}{2} \\[/tex]

we subtract the whole numbers:

[tex]4\frac{2}{5}-\frac{1}{2}[/tex]

Now we convert the first term to fraction:

[tex]\frac{22}{5} -\frac{1}{2}\\ =\frac{22*2-5*1}{5*2}\\ =\frac{44-5}{10}\\ =\frac{39}{10} \\[/tex]

and convert the fraction to a mixed fraction:

[tex]3\frac{9}{10}[/tex]

he has [tex]3\frac{9}{10}[/tex] pounds left.