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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%

Explain please

Guest Jan 4, 2018
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6+0 Answers

 #1
avatar+7056 
+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

hectictar  Jan 4, 2018
 #2
avatar+7056 
+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

hectictar  Jan 4, 2018
edited by hectictar  Jan 4, 2018
 #5
avatar
+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
avatar+7056 
+1

Thanks! laugh 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. smiley

hectictar  Jan 4, 2018
 #3
avatar+7056 
+1

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

hectictar  Jan 4, 2018
 #4
avatar+7056 
+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%

hectictar  Jan 4, 2018

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