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Find 21/25 of \$27,000

A:\$32,140
B:\$5,670
C:\$22,680
D:\$23,760

Could you explain how it is C??

A new law requires that 12% of an individual's income be invested in the stock market. Your accounts show that you need to put \$420 in the stock market this year. How much did you earn this year.

A \$5,040
B \$350
C \$504**
D \$3,500

Explain please! how you get the answer.

Estimate an 18% tip for a 63.50 meal.
A) 9.50
B)12.00
C)15.00
D)18.50

EXplain plz!

Find the percent of markup. Round to the nearest tenth. \$33.00 to \$45.00
a. 35.6%

b. 4.0%

c. 12.0%

d. 36.4%

Jan 4, 2018

#1
+8394
+1

First let's think about a simpler problem:     Find  3/4  of  20  .

We want to take  20  , divide it into  4  parts of equal amount, and take  3  of them.

20/4  =  5   ( Think...  5 + 5 + 5 + 5  =  20 )

So... one fourth of  20  is  5  .  Three fourths of  20  is  3 * 5 , or  15 .

3/4  of  20   =   3 * 20/4   =   3 * 5   =   15

Using the same logic.... we can find  21/25  of  \$27,000 .

21/25  of  \$27,000   =   21 *  \$27,000/25   =   21  *  \$1080   =   \$22,680

Jan 4, 2018
#2
+8394
+1

A new law requires that 12% of an individual's income be invested in the stock market. Your accounts show that you need to put \$420 in the stock market this year. How much did you earn this year.

12%  of your income  =  amount you need to put in the stock market

12%  of your income  =  \$420

12/100 of your income  =  \$420

12/100  *  your income  =  \$420

0.12  *  your income   =  \$420      Divide both sides of this equation by  0.12  .

your income   =   \$420 / 0.12

your income   =   \$3500

Jan 4, 2018
edited by hectictar  Jan 4, 2018
#5
+1

ThankYou so much

I was confused because I gave you the wrong question the law one this is the real one

A new law requires a 5% of an individual's income be invested in the stock market. your account shows that you need to put \$815 in the stock market this year. how much did you earn this year

But you've helped me enough, I appreciate it a lot :D

Guest Jan 4, 2018
#6
+8394
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Thanks! If you do need some help on that one don't hesitate to ask!

Or if you're unsure of it we can check your work.

hectictar  Jan 4, 2018
#3
+8394
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Estimate an 18% tip for a 63.50 meal.

It says to estimate...so let's say that is about  20% of 60

20%  of  60   =   20/100  of  60   =   2/10  of  60   =   2  *  60/10   =   2 * 6   =   12

Jan 4, 2018
#4
+8394
+1

Find the percent of markup. Round to the nearest tenth. \$33.00 to \$45.00

\$33  +  (percent of markup * \$33)   =   \$45         Subtract  \$33  from both sides of this equation.

percent of markup * \$33   =   \$12       Divide both sides by  \$33 .

percent of markup   ≈   0.364   =   36.4/100   =   36.4%

Jan 4, 2018