Question

Jorge tiene 5 veces la edad de su hijo dentro de 15 años, tendrá únicamente el doble de la edad de su hijo ¿cuantos años tendrá su hijo dentro de 15 años ?

Answer 1

His son will be 20 within 15 years

Explanation:

The question in English is

Jorge is 5 times his son's age, within 15 years, he will only be twice his son's age. How many years will his son be within 15 years?

Let

x ----> Jorge's age now

y ----> His son's age now

we know that

`x=5y` -----> equation A

`(x+15)=2(y+15)` -----> equation B

Solve the system by substitution

Substitute equation A in equation B

`(5y+15)=2(y+15)`

Solve for y

`(5y+15)=2y+30`

`5y-2y=30-15`

`3y=15`

`y=5`

Find the value of x

`x=5y` ---->
`x=5(5)=25`

so

Jorge's age now is 25 years

His son's age now is 5 years

therefore

His son will be 20 within 15 years