Question

Arlene’s age is twice the age of Bernice. Charlie’s age is equal to the sum of Arlene’s and Bernice’s ages. If the square of the sum of their
ages is equal to 8100, who is the youngest and what is her age? Please utilize functions to solve the problem.

Answer 1

Answer:

Let Rehman's present age =x yrs.

3 yrs ago, Rehman's age =x−3 yrs

5 yrs hence, his age will be x+5 yrs

(x−3)

1

+

(x+5)

1

=

3

1

(x+5)(x−3)

(x+5+x−3)

=

3

1

x

2

+2x−15=6x+6

x

2

−4x−21=0

x

2

−7x+3x−21=0

x(x−7)+3(x−7)=0

(x+3)(x−7)=0

x=−3,7

Rehman's present age is 7 yrs.

Answer 2

Answer:

rehmans present age is 7 explanation given by someone