Let A be Anna's age

Let E be Elen's age



This part: "Anna is 12 years younger than Elen"  means

  A = E - 12  

Given Elen's age, subtract 12 to get Anna's age.  Keep in mind, Anna is the younger of the two, and this equation agrees with that.



Notice we can add 12 to both sides to get the equivalent 

  A + 12 = E  

This allows you to find Elen's age if someone gives you Anna's age.  

We can also write this as 

 E = A + 12  

which looks a little nicer.



If A = 25 what do you think E is?   Remember, you can use E = A + 12 ... just replace 'A' with 25...



 

Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
 ----------------------------------------------------------

Anna is 12 years younger than elen if anna is 25 how old is elen

--------------------------------------------------------



--------------------------------------------------------------------

Anna is 12 years younger than Ellen. if Anna is 25, how old is Ellen?

-------------------------------------------------------------------





Make the substitution now, if you want.

25 is 12 less than E.



As an equation,  , and solving this is simple basic arithmetic.





 

RELATED QUESTIONS

May is M years old now. Six years ago, April was four less than thrice May's age then.... (answered by mananth)

Anna is 3 years older than Ryan and Ryan is 5 years younger than John.  If Anna is 8... (answered by ikleyn)

Anna is 3 years older than Ryan, and Ryan is 5 years younger than John. If Anna is 8... (answered by ikleyn)

A canoeist can row 12 kph in still water. If he rows downstream for five hours when the... (answered by ewatrrr)

Anna is 12 years old, and her mother is three times as old as Anna. How many years ago... (answered by stanbon)

Pls. help me with my assignment... Anna is twice as old as Melody. Five years ago, Anna... (answered by awang1996)

how is nine is greater than twice the sumof a and b written in mathematical phrases?
 (answered by tracyc0912)

Anna is 12 years older than her sister Sue.7 years from now Sue will be 5/9 as old as... (answered by greenestamps)

tara is eight years younger than her sister anna.
if the sum of their age is 34 how old... (answered by lenny460)