Sunday

April 20, 2014

April 20, 2014

Posted by **Angel** on Monday, December 3, 2012 at 5:48am.

- Math -
**Reiny**, Monday, December 3, 2012 at 11:01amEmma's present age ---- x

son's present age -------y

in 5 years:

Emma = x+5

Son = y+5

but x+5 = 2(y+5) +3

x - 2y = 8 (#1)

5 years ago:

Emma = x-5

Son = y-5

x-5 = 5(y-5) - 2

x-5 = 5y - 25 - 2

x - 5y = -22 (#2)

#1 - #2:

3y = 30

y = 10

in #1 : x -20 = 8

x = 28

Emma now is 28, her son is now 10

check:

in 5 from now:

>b> Emma is 33 , her son is 15

is 33 three more than twice 15 ? YES

5 years ago:

Emma was 23 , her son was 5

is 23 two less than 5 times 5 ? YES

All is good

**Related Questions**

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

Algebra - Arianna is 25 years older tha Emma. In 15 years, Arianna will be twice...

personal - How much would an investor with a 12% required return be willing to ...

grammer - I want to say Five years ago i went somewhere, should there be a comma...

Math - Find the accumulated value of quarterly deposits of three hundred dollars...

Math - Emma is 5 years older than 6 times beth's age. If Emma is 29 years old ...

math - A. Brad is 12 years older than Sam . If Brad were 8 years older than he ...

Maths - Peter invests $12500 for 5 years at 12 percent per annum,compounded ...

Math - If a nurse deposits $2,000 today in a bank account and the interest is ...

finance - A 5-year annuity of ten $4500 semiannual payments will begin 9 years ...