# the present age of the daughter.

BuyFind

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071
BuyFind

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 1.6, Problem 30E
To determine

Expert Solution

## Answer to Problem 30E

12year .

### Explanation of Solution

Given:

The given condition is “A father is four times as old as his daughter.”.

Calculation:

A father is four times as old as his daughter.

Let the daughter present age be x .

Therefore, father’s age is 4x .

According to the question, the future age of daughter is three times the sum of actual age and 6, which is equal to more than 6 years to the father’s age.

4x+6=3(x+6)4x+6=3x+184x3x=12x=12

Therefore, the present age of the daughter is 12year

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