Thursday

January 29, 2015

January 29, 2015

Posted by **Mathematics** on Wednesday, January 11, 2012 at 8:35am.

- Kathie -
**Reiny**, Wednesday, January 11, 2012 at 8:50amson's present age: x

father's present age : y

4 yrs from now:

son : x+4

father : y+4

y+4 = 3(x+4)

y = 3x + 8

6 yrs ago:

son : x-6

father: y-6

y - 6 = 7(x-6)

y = 7x -36

so 7x -36 =3x+8

4x = 44

x = 11

y = 3(11)+8 = 41

**The son is now 11 and the father is now 41**

check:

4 yrs from now: son-- 15, father 45

3 times as old? yes

6 yrs ago: son -- 5, father 35

7 times as old? yes

all is good

- Kathie -
**Mathematics**, Wednesday, January 11, 2012 at 10:01amThank you very much Reiny!

**Answer this Question**

**Related Questions**

Math - Ten years ago a man was three times as old as his son. In twelve more ...

Algebra - Ten years ago a man was three times as old as his son. In twelve more ...

math - Sanjeev is twice as old as his son.If after four years he will be four ...

math - Sanjeev is twice as old as his son.If after four years he will be four ...

MATH - 1. A father is three times as old as his son. Five years ago the sum of ...

math - When a woman is as old as her father is now, she will be five times as ...

Algebra (Age Problem) - A man is 6 times as old as his son. In 4 years he will ...

math - A. A woman was 30 years old when her daughter was born.Her age is now 6 ...

Math - In five years,Emma will be three years more than twice as old as her son...

math - a father is 7times as old as his son .two years ago,the father was ...