SOLUTION: In 7 years Maria will be twice as old as she was 3 years ago. What is her present age?
Algebra.Com
Question 512347: In 7 years Maria will be twice as old as she was 3 years ago. What is her present age?
Answer by Maths68(1474) (Show Source): You can put this solution on YOUR website!
Let
Present age of Maria = m
In 7 years means we have to add 7 to the present age of Maria
=m+7
3 years ago means we have to subtract 3 from her present age
=m-3
then
m+7=2(m-3)
m+7=2m-6
m=2m-6-7
m-2m=-13
-m=-13
Multiply by (-1) both sides
m=13
Maria is 13 years old now.
RELATED QUESTIONS
Thirteen years from now Amanda will be twice as old as she was seven years ago. Her... (answered by Fombitz)
In 9 years, Kathy will be 3 times as old as she was 7 years ago. What is Kathy's present... (answered by josmiceli)
If, in 7 years, Susan will be 2 times as old as she was 3 years ago, what is Susan’s... (answered by MathLover1)
In two years, Ann will be twice as old as she was 5 years ago. What age is... (answered by Amateur)
Bob, Maria, and Shoshana all have birthdays on the same day. Bobs present age is two... (answered by stanbon,MathTherapy)
After seven years raj will be twice as old as he was three years ago what is his present... (answered by josgarithmetic,greenestamps)
Maridol is twice as old as Maricel. In six years, she will be four times as old as... (answered by Seutip)
in 13 years i will be twice as old as i was 7 years ago. what is my age
(answered by mananth)
in 10 years, william will be twice as old as he was 7 years ago. what is williams age... (answered by ankor@dixie-net.com)