Mrs. Lemke has 10 2/3 ounces of fertilizer for her plants. She plans to use 3/4 ounce of fertilizer on each plant. After she puts fertilizer on as many plants as she can, how much fertilizer will be left over?

Respuesta :

She can fertilize 13 plants using only 9.75 ounces of fertilizer.

Answer:

Plants fertilized = 14

Amount of remaining fertilizer = [tex]\frac{1}{6}[/tex] ounces

Step-by-step explanation:

Mrs Lemke has the amount of fertilizer =  [tex]10\frac{2}{3}[/tex] ounces

For each plant she is using fertilizer = [tex]\frac{3}{4}[/tex] ounce

Let number of plants she fertilized = x

Therefore, total amount of fertilizer used = [tex]\frac{3x}{4}[/tex] ounce

Equation for the fertilizer used in x plants will be

[tex]\frac{3x}{4}[/tex] =  [tex]\frac{32}{3}[/tex]

x = [tex]\frac{32}{3}\times \frac{4}{3}[/tex]

x =  [tex]\frac{128}{9}[/tex]

x =  [tex]14\frac{2}{9}[/tex]

Since plants can't be in the fraction so only 14 plants can be fertilized and some amount of fertilizer will remain unused.

Amount of fertilizer remaining = [tex]\frac{32}{3}-14\times \frac{3}{4}[/tex]

= [tex]\frac{32}{3}-\frac{42}{4}[/tex]

= [tex]\frac{128-126}{12}[/tex]

=  [tex]\frac{2}{12}[/tex]

=  [tex]\frac{1}{6}[/tex] ounces