anna bakes 12 blueberry muffins, 20 bran muffins, and 8 apple muffins. what percent of the muffins are blueberry?

Mathematics

2 answers:

lianna [129]3 years ago

5 0

Answer:

$\%_B_b=\frac{3}{10} =0.3=30\%$

Step-by-step explanation:

When we talk about percentages, we refer to that amount, which, proportionally, refers to a part of the total. In this sense, the total amount of muffins would equal 100%. And we need to find what is the percentage of the amount of blueberry muffins, so:

Let:

$Bb=Amount\hspace{3}of\hspace{3}blueberry\hspace{3}muffins\\B=Amount\hspace{3}of\hspace{3}bran\hspace{3}muffins\\A=Amount\hspace{3}of\hspace{3}apple\hspace{3}muffins\\\%_T=Total\hspace{3}percentage=100\%\\\%_B_b=Percentage\hspace{3} of \hspace{3}blueberry\hspace{3} muffins$

$T=Total\hspace{3}amount\hspace{3}of\hspace{3}muffins$

Using cross-multiplication we can find the what percent of the muffins are blueberry:

$\frac{\%_T}{\%_B_b}= \frac{Bb+B+A}{Bb} \\\\\frac{100\%}{\%_B_b} =\frac{12+20+8}{12}$

Solving for $\%_B_b$

$\%_B_b=\frac{12*100}{12+20+8}=\frac{1200}{40}=30\%$

lara [203]3 years ago

4 0

30%. You want to add up all the muffins (which is 40) and make that your denominator. then as the numerator you make it as many blueberry muffins Anna has. (which is 12) you divide 12÷40×100. and that gives you a percent of 30.

You might be interested in

Fairview auto repair originally paid its mechanics $20 per hour. Now that there is a new owner, the mechanics make 5% less. How

sattari [20]

Answer:

The new amount paid to mechanics per after by new owner is $ 19 Answer

Step-by-step explanation:

Given as :

The amount paid to mechanics initially = $ 20 per hour

Now, The new owner paid less at the rate = 5%

Let the amount paid to the mechanics after 5 % less = x per hour

So, According to question

The new amount paid to mechanics per hour = initial amount paid per hour × ( 1 - $\frac{rate}{100}$ )