document.write( "Question 746929: Mary is n years old. In 10 yrs how old will Mary be? How old was she 7 years ago? \n" ); document.write( "
Algebra.Com's Answer #454594 by Chipmonkcheeks(3)![]() ![]() ![]() You can put this solution on YOUR website! Lets say Mary is 20 years old. Then 7 years ago she would have been 13 years old \n" ); document.write( "that is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In 10 years time Mary will be 30, that is: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So lets do the same thing but instead of saying Mary is 20 years old, we will say Mary is n years old. \n" ); document.write( "Then 7 years ago Mary would have been \n" ); document.write( "\n" ); document.write( "In 10 years time Mary will be \n" ); document.write( "\n" ); document.write( "Simplez \n" ); document.write( " |