Wednesday

April 16, 2014

April 16, 2014

Posted by **Mary** on Saturday, November 3, 2012 at 10:49pm.

- Math -
**Damon**, Saturday, November 3, 2012 at 10:57pmx and x+4 forever

x + 7 + x+ 4 +7 = 2x + 18 = 24 after seven years

2x = 6

x = 3

x+4 = 7

so James is 3 now

- Math -
**Reiny**, Saturday, November 3, 2012 at 11:05pmNow:

Jane --- x

Kenny --- x+4

after 7 years:

Jane --- x+7

Kenny -- x+11

at that time:

x+7 + x+11 = 24

2x = 6

x=3

Jane is now 3, (where does James come in ? )

...... If you have to do it using 2 variables ....

jane now --- x

Kenny now -- y

y - x = 4 (#1)

x+7 + y+7 = 24

x+y = 10 (#2)

add #1 and #2

2y = 14

y = 7

x = 3

Same answer, but the first method looked easier.

**Related Questions**

Algebra - Gail and her brother Henry had a combined age of 47. If Gail was twice...

math - Mary, who is sixteen years old, is four times as old as her brother. How...

math - Donna is 12 years younger than her brother. in 2 years she will be 14 ...

math - Deepak is 10 years old, and his brother is 7 years old. In how many years...

Math - Maria is three times as old as her brother.In 4 years,Maria will be twice...

Math - 15) Marissa is 3 years older than her younger brother. Her older brother ...

math - helen is 9 years old and her brother is two times as old as she. when ...

math - aileen's brother is twice as old as her. Ten years from now, her brother ...

Calculus - Today, Daryl is two-thirds as old as he will be eight years before he...

math - you are 6 years older than your sister she is 4 years older than your ...