SOLUTION: I don't understand how to start this problem: David is Y years old. In 15 years, he will be two times as old as he was 10 years ago.
Algebra.Com
Question 1075978: I don't understand how to start this problem: David is Y years old. In 15 years, he will be two times as old as he was 10 years ago.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
David is Y years old.
In 15 years, he will be two times as old as he was 10 years ago.
Equation:
y+15 = 2(y-10)
y + 15 = 2y - 20
y = 35 yrs (David's age now)
------------
Cheers,
Stan H.
------------
RELATED QUESTIONS
In 2 years, David will be twice as old as he was 5 years ago. How old is he... (answered by checkley77)
bill was asked how old he was. he replied," In two years i will be twice as old as i was... (answered by josgarithmetic)
In 7 years harry will be two times as old as he was last year how old is he... (answered by addingup)
15 years from now Isaac will be 8 times as old as he was 6 years ago. how old in years is (answered by ankor@dixie-net.com)
In 15 years, A would be twice as old as he was 10 years ago. How old is he... (answered by ikleyn)
In 5 years, Brayan will be 3 times as old as he was 7 years ago. How old is... (answered by josmiceli)
Vincent is three times as old as David was two years ago. In three more years, David will (answered by mananth)
sonny is twice as old as david. Four years ago, he was four times as old as david. When... (answered by mananth,josmiceli,ikdeep)
in 10 years, frederick will be thrice as old as he was 8 years ago. How old is he... (answered by nilan)