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Let’s check out your problem:
Tiffany is \(34\) years old and Vanessa is \(6\) years old.
\newline
How many years will it take until Tiffany is only \(3\) times as old as Vanessa?
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Math Problems
Algebra 2
Solve a system of equations using any method: word problems
Full solution
Q.
Tiffany is \(34\) years old and Vanessa is \(6\) years old.
\newline
How many years will it take until Tiffany is only \(3\) times as old as Vanessa?
Denote Years as
x
x
x
:
Let's denote the number of years it will take for Tiffany to be only
3
3
3
times as old as Vanessa as
“
x
”
\text{“}x\text{”}
“
x
”
years.
Calculate Tiffany's Age:
After
x
x
x
years, Tiffany's age will be
34
+
x
34 + x
34
+
x
years.
Calculate Vanessa's Age:
Similarly, after
x
x
x
years, Vanessa's age will be
6
+
x
6 + x
6
+
x
years.
Set Up Equation:
We are looking for the time when Tiffany's age is
3
3
3
times Vanessa's age. So we can set up the equation:
\newline
34
+
x
=
3
×
(
6
+
x
)
34 + x = 3 \times (6 + x)
34
+
x
=
3
×
(
6
+
x
)
Solve for x:
Now we solve for x:
34
+
x
=
18
+
3
x
34 + x = 18 + 3x
34
+
x
=
18
+
3
x
Subtract
x
x
x
:
Subtract
x
x
x
from both sides to get:
\newline
34
=
18
+
2
x
34 = 18 + 2x
34
=
18
+
2
x
Isolate
x
x
x
Term:
Subtract
18
18
18
from both sides to isolate the term with
x
x
x
:
34
−
18
=
2
x
34 - 18 = 2x
34
−
18
=
2
x
16
=
2
x
16 = 2x
16
=
2
x
Divide to Solve
x
x
x
:
Divide both sides by
2
2
2
to solve for
x
x
x
:
16
2
=
x
\frac{16}{2} = x
2
16
=
x
8
=
x
8 = x
8
=
x
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