show your work.
2006-12-21 18:08:29 · 11 answers · asked by yrsosketchy 1 in Science & Mathematics ➔ Other - Science
let erins age is x and warrens age is y
then
x=3y......................(1)
x+4=2*(y+4)..........(2)
putting x=3y
3y=2y+8-4
y=4
x=12
erins age is 12 and warren is 4
2006-12-21 22:37:29 · answer #1 · answered by girish sahare 2 · 0⤊ 0⤋
Warren=4 Erin=12
4+4=8 12+4=16
16 = 2*8
2006-12-21 18:12:42 · answer #2 · answered by DisneyKrayzie 4 · 1⤊ 0⤋
Erin = 12 , Warren = 4
2006-12-22 00:14:25 · answer #3 · answered by vibs 2 · 0⤊ 0⤋
Erin is12years n Warren is 4years
If Warren is x years then Erin is 3x.
So,
according to question
3x+4=2[x+4]
Solve the equation.U'll get the answer
2006-12-21 20:26:11 · answer #4 · answered by andy 1 · 0⤊ 0⤋
The going rate of Maths tutions is $25 per hour.....:-)
Anyways, am not going to do the entire thing.....here are the clues to solve such questions...
Always assume the smaller of the two numbers as an unknown say "x".
Therefore, here Warren's age is x.
Now form the equations. Therefore Erin's age is 3x.
After 4 years, Warren will be, x+4.
Erin will therefore be, 2(x+4)
Now solve the equations....Am sure you can stretch that much and fill in the gaps....:-))
2006-12-25 15:07:28 · answer #5 · answered by moksha 2 · 0⤊ 0⤋
Use E for Erin's age and W for Warren's.
Erin's age is 3 times Warren's: E = 3*W
In 4 years she will be twice as old as he will be: (E+4) = 2*(W+4)
Substitute "3*W" for E, in the second equation: (3*W+4) = 2*(W+4)
Simplify: 3W + 4 = 2W +8
Simplify: W=4
Substitute back: E=3*4=12
Check your work:
Today: Erin is 12, Waren in 4.
In four years, Erin will be 16, Waren will be 8.
2006-12-21 18:17:23 · answer #6 · answered by Bryan J 4 · 3⤊ 0⤋
Erin - 12 , Warren -4
12+4 = 16 4+4=8 16/2=8
There are other combinations that work as well. You really should do your own homework kiddo, getting the answer here is not going to help unless you learn how to do it instead of just copying it.
2006-12-21 18:10:39 · answer #7 · answered by Star 5 · 1⤊ 0⤋
Different way of solution:
All know that
Difference in age between two will be the same at any age.
Since one’s age is 3 times the other, the difference in ages is 2 times the younger one, say 2w.
After 4 years, since one’s age is 2 times the other, the difference in ages equals the younger one (w +4)
2w = w +4
w = 4 other one’s age 3x4 = 12.
2006-12-21 20:24:09 · answer #8 · answered by Pearlsawme 7 · 0⤊ 0⤋
Warren is 2, Erin is 6.
Now get bent.
2006-12-21 18:10:06 · answer #9 · answered by Jerk my flergan! 1 · 0⤊ 3⤋
I will tell you the answer if your teacher gives me a chocolate chip cookie.
2006-12-21 18:13:45 · answer #10 · answered by Anonymous · 0⤊ 3⤋