Age Relationship Problem: Solve for Hector's Age Using 3x and -10 Relations

Luciana's age is 3 times Ivana's age.

Hector is 10 years younger than Luciana.

The sum of the three ages is 32.

How old is Hector?

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1

Understand the problem

Luciana's age is 3 times Ivana's age.

Hector is 10 years younger than Luciana.

The sum of the three ages is 32.

How old is Hector?

2

Step-by-step solution

To solve this problem, let's define the variables and set up the equation:

  • Let Ivana's age be x x .
  • Then, Luciana's age is 3x 3x , since her age is three times Ivana's age.
  • Hector, being 10 years younger than Luciana, would be 3x10 3x - 10 .

We know the sum of their ages is 32, so we set up the equation:

x+3x+(3x10)=32 x + 3x + (3x - 10) = 32

Simplify the equation:

x+3x+3x10=32 x + 3x + 3x - 10 = 32

7x10=32 7x - 10 = 32

Next, solve for x x :

Add 10 to both sides:

7x=42 7x = 42

Divide both sides by 7:

x=6 x = 6

Now that we know Ivana is 6 years old, we can find Hector's age:

Hector's age = 3x10=3(6)10=1810=8 3x - 10 = 3(6) - 10 = 18 - 10 = 8

Therefore, Hector is 8 years old.

3

Final Answer

8 8

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\( x+7=14 \)

\( x=\text{?} \)

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