Tuesday

July 29, 2014

July 29, 2014

Posted by **joy** on Wednesday, July 28, 2010 at 9:09pm.

- math -
**Reiny**, Wednesday, July 28, 2010 at 9:18pmPresent age:

Perla --- x

Orly ---- 3x+4

four yrs ago

perla -- x-4

orly ---- 3x+4 - 4 or 3x

"Four years ago, Orly was four times as old as Perla was then"

---> 3x = 4(x-4)

3x = 4x - 16

x = 16

So Perla is 16 and Orla is 52

check:

now: Perla = 16, Orla = 52

4 yrs ago : Perla = 12, Orla = 48

Is 48 four times 12 ? YEA

- math -
**joy**, Wednesday, July 28, 2010 at 9:54pmReiny i have some question if Perla is x=16 how about the solution for Orly

- math -
**Reiny**, Wednesday, July 28, 2010 at 10:29pmAs I stated above, Orla is 52

I had defined his age as 3x+4, and 2(16)+4 = 52

**Related Questions**

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

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

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

math - what are the equation for Orly and Perla

math - 1. Lisa is 15 years old and her father is 40. How many years ago was the ...

math age problem - four years agoslyvia was two thirds as old as alex was then. ...

Math - 2x represents that Clyde is twice (2 times) as old as Bonnie. 6 years ...

Math - One-third of Derick's age two years ago is equal to a quarter of his age ...

Mathematics-please help quick!! - Harry is twice as old as Doyle. Doyle's age is...

age problem (math) - Nila is now x years old. 3 years ago, her brother ricky was...