SOLUTION: if 5 years ago mary is twice older than her sister. how old is mary now that her sister is 11 years old?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: if 5 years ago mary is twice older than her sister. how old is mary now that her sister is 11 years old?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1086689: if 5 years ago mary is twice older than her sister. how old is mary now that her sister is 11 years old?
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.
In English,  "twice older" = "three times as old".



Is it what you mean ?  - If so, then Mary is 3*(11-5) + 5 = 3*6 + 5 = 18 + 5 = 23 years old now.



Answer by MathTherapy(10556) About Me  (Show Source):
You can put this solution on YOUR website!

if 5 years ago mary is twice older than her sister. how old is mary now that her sister is 11 years old?
If 5 years ago, Mary WAS TWICE OLDER than her sister, then Mary is now 23.

If 5 years ago, Mary WAS TWICE AS OLD AS her sister , then Mary is now 17.

You figure it out since the problem, like about 90% of these age problems in this forum, is FAULTY.