If 20% of an amount is 700, find the amount.

Question

Help is greatly appreciated

Answer 1

In word (story) problem, the word "of" usually means multiply.  20% can also be written as 0.20 or 20/100, as needed.

 

Let x = the amount

 

Translate:

  "20% of an amount is 700"   means   (20%)x=700 or 0.20x=700 or (20/100)x=700.

 

Let's use the fraction form:

   (20/100)x = 700

        x = 700*(100/20)                [multiply both sides by 100/20)

        x = 3500

 

Note:  if you used 0.20, then multiply both sides by 5.

Answer 2

20% of X is 700.

 

 

   20          700

------   =  ------   Cross multiple  and divide.      (100 x 700)  divided   20.     

 100           x                                                               70,000  divided  by 20 is 3,500

 

700 is 20% of 3,500