I think the answer is 2 and 8 but I have no clue how to write in question form. I got 2 and 8 because in four years they would be 6 and 12 can someone tell me how to write out the equation??
2006-12-29 04:21:56 · 7 answers · asked by kool_aid_1_00 1 in Science & Mathematics ➔ Mathematics
In math form...
Let E be Erin's current age and W be Warren's current age.
The first sentence (Erin's age is 3 times Warren's) translates to:
E = 3 x W
The second sentence (In 4 years, she will be twice as old as he will be) becomes:
E+4 = 2 x (W+4)
So, if we replace E in the second equation with 3xW, we get:
(3 x W) + 4 = 2 x (W + 4)
Expand the right hand side:
(3 x W) + 4 = (2 x W) + 8
Subtract (2xW) from both sides:
W +4 = 8
Subtract 4 from both sides:
W = 4
And going back to first equation:
E = 3 x W
E = 3 x 4
E = 12
Therefore, Erin is currently 12 and Warren is currently 4.
2006-12-29 04:28:43 · answer #1 · answered by Iago 2 · 3⤊ 0⤋
Erin is 12, Warren is 4; therefore Erin is 3x the age of Warren now. In 4 yrs Erin will be 16 and Warren 8, making Erin twice the age of Warren in 4 years.
2006-12-29 12:36:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Erin is 12
Warren is 4
2006-12-29 12:28:44 · answer #3 · answered by Ray8l 2 · 0⤊ 0⤋
12 and 4
2006-12-29 12:32:14 · answer #4 · answered by bayareart1 6 · 0⤊ 0⤋
erin=3x warren=x
in 4 years: 3x+4 x+4
3x+4= 2(x+4)
x=4=warren
erin=12
2006-12-29 12:51:31 · answer #5 · answered by Anonymous · 0⤊ 0⤋
3x=Erin's age
x=Warren's age
3x+4=2(x+4)
3x+4=2x+8
x+4=8
x=4
3(4)=12
Warren is 4 and Erin is 12.
2006-12-29 13:38:20 · answer #6 · answered by Anonymous · 0⤊ 0⤋
E = Erin's age
W = Warren's age
E = 3xW
E+4 = 2x(W+4)
2006-12-29 12:29:37 · answer #7 · answered by joycedomingo 3 · 0⤊ 0⤋