# Algebra

Ten years ago, Heather was twice as old as her brother David. Today, she is 12 years older than him. How old are they both today?

Heather's age today: 27
David's age today: 15

Thanks in advance! I tried using other solutions from Google and just am not sure I got it right.

1. 👍 0
2. 👎 1
3. 👁 219
1. 10 years ago H-10=2(D-10)equ 1 H=D+12 equ 2 sub equ 2 in equ 1 D+12-10=2D-20 D+2=2D-20 D=22yrs H=22+12=34yrs

1. 👍 0
2. 👎 1
posted by Kosy

## Similar Questions

1. ### Math

Eight years ago, Heather was twice as old as her brother David. Today, she is 12 years older than him. How old is Heather now?

asked by Kathy on September 9, 2015
2. ### Math

FIve years ago Zack would have been three times older than his young brother but five years from now he will only be two times older than his brother. How old is his brother? 25 In other words let x= brothers age so: 3(x-5)=2(x+5)

asked by Oscar on September 26, 2006
3. ### Algebra

Gail and her brother Henry had a combined age of 47. If Gail was twice as old as Henry ten years ago, how old is Gail today?

asked by Kenny on September 8, 2013
4. ### Algebra

One half of Heather's age two years from now plus one third of her age three years ago is twenty years. How old is she now? Let x= Heather's age now X must be a whole number that is positive.

asked by Holly J. on October 29, 2011
5. ### finance

David will retire to Florida in ten years. After he retires, he wants to take out \$28,000 at the end of each year for 15 years. If he can invest the money at 8% annually, what amount must he invest today?

asked by mo on July 8, 2013
6. ### math

both jamie and her brother david were born on the same day but david was born three years before jamie how can you represent the relationship between james and david's ages in a table,graph, and equation

asked by sophie on October 5, 2015

1) David has a mass of 86.4-kg and is skating with in-line skates. He sees his 24.8-kg younger brother up ahead standing on the sidewalk, with his back turned. Coming up from behind, he grabs his brother and rolls off at a speed

asked by Hannah on June 3, 2012
8. ### Biology

PLEASE HELP!!!! 1. How many millions of years ago did sharks first appear? (Make sure you are looking for animals that only have cartilage skeletons). 2. How many millions of years ago did bony fish (like the perch) first appear?

asked by Kim on April 14, 2013
9. ### Math

The three Smith children have a combined age of 50. The youngest is half as old as the oldest. Ten years ago, the oldest was 7 times as the youngest. How old were the children ten years ago? (3 answers) I don't know if this is

asked by Sidney on January 14, 2016
10. ### math 7

Nila is now x years old. Three yrs ago, her brother ricky was twice as old as she, write rickys age ten yrs frm now in terms of x. (With solution pls) tnx...

asked by MNHS_MNHS on January 13, 2014

More Similar Questions