Wednesday

April 16, 2014

April 16, 2014

Posted by **Anonymous** on Thursday, March 29, 2012 at 9:12pm.

- Algebra -
**Anonymous**, Thursday, March 29, 2012 at 9:50pm1. Lets set

Brian's age= x

Kim's age =y

2."Brian is 26 years oldr than his daughter Kim."

So, if Brian was 26 years younger, thier age would be equal:

y=x-26 ( is our first equation)

3. "The sum of their ages is twice the differences of their ages."

Which means: x+y = 2(x-y)

(sum of ages) (Twice diff age)

Solving, we change the "y" in the bottom of step 3 into x-26 and get:

x+y= 2( x-y)

x+(x-26)= 2(x-(x-26))

2x-26= 2(x-x+26)

2x-26= 2(26)

2x-26=52

2x= 52+26

2x=78

x=39

Since y= x-26,

y= 39 -26

y= 13

So Kim's age is 13 and Brian's age is 39

Hope this helps :D

**Related Questions**

algebra - brian is 26 years older than his daughter kim. the sum of their ages ...

algebra - Kim is 9 years older than her siater. kim is one more than 3 times her...

Math - A mother is 4 times as old as her daughter. In 4 years, the mother will ...

Math - Kim is twice the age of Ryan. In 4 years Kim will be 7 years older than ...

math - mrs.ellis is 28 years older than her daughter. in 11 years she will be 3 ...

Mathematics - "Kim is 15. Kim's father is 39. In how many years will Kim's ...

Mathematics - "Kim is 15. Kim's father is 39. In how many years will Kim's ...

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

math - A. John is now 10 years older than Marcus. Three times John's age 5 years...

math - a mother is 21 years older than her new born daughter.how old will the ...