Ralph is 3 times as old as Sara. In 6 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now.
The equation for solving this problem is:
2007-01-12 07:29:26 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
R = 3S
R+6=2(S+6)
3S+6 = 2S+12
S=6
R = 18
2007-01-12 07:32:29 · answer #1 · answered by bequalming 5 · 0⤊ 0⤋
The equation for solving this problem is:
Let R = Ralph's age. Then
R + 6 = 2(R/3 + 6)
2007-01-12 07:51:45 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋
R = ralph's age
S = sara's age
ralph is 3 times older than sara
R = 3*S
In six years ralph will be twice as old as sara
R+6 = 2*(S+6)
try not to fail your test
2007-01-12 07:35:42 · answer #3 · answered by maatweeb 2 · 0⤊ 0⤋
Ralph age is x:
3*y= x
2*(y+6) = x+6
2*y+2*6 =3*y+6
6=y;
And x = 18
2007-01-12 07:32:45 · answer #4 · answered by Luis U 2 · 0⤊ 0⤋
R - Ralph S-Sara
R=3*S
R+6 = 2(S+6)
2007-01-12 07:41:51 · answer #5 · answered by raf67ab 2 · 0⤊ 0⤋
18 of course
sara is 6 ralph is 18
in 6 years
sara is 12 ralph is 24
2007-01-12 07:37:19 · answer #6 · answered by daanzig 4 · 0⤊ 0⤋
R = 3S
R + 6 = 2(S + 6)
R + 6 = 2S + 12
R = 2S + 6
3S = 2S + 6
S = 6
R = 18
-----------
Ralph is 18 and Sara is 6
In 6 years, Ralph will be 24 and Sara will be 12
2007-01-12 07:32:49 · answer #7 · answered by Tom :: Athier than Thou 6 · 0⤊ 0⤋
r=3s
r+6=2(s+6) substitute r=3s
3s+6=2s+12 subtract s+6 from each side
s=6
sarah is 6 & ralph is 18
2007-01-12 07:44:26 · answer #8 · answered by yupchagee 7 · 0⤊ 0⤋
x=sara's age
3x=ralph's
3x+6=2(x+6)
2007-01-12 07:33:02 · answer #9 · answered by Anonymous · 0⤊ 0⤋
(R+6)=2*(R/3 + 6)
Solve for R.
2007-01-12 07:34:45 · answer #10 · answered by Anonymous · 0⤊ 0⤋