SOLUTION: Rahul's father is 3 times as old as Rahull. Four years ago, his father was 4 times older than him. How old is Rahul?

Question 825089: Rahul's father is 3 times as old as Rahull. Four years ago, his father was 4 times older than him. How old is Rahul?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
---
x = father
y = rahull
---
x = 3y
x - 4 = 4(y - 4)
---
put the system of linear equations into standard form
---
x - 3y = 0
x - 4 = 4y -16
---
x - 3y = 0
x - 4y = -12
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
solution:
x = father = 36
y = rahull = 12
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
RELATED QUESTIONS
a father is 30 years older than his son. three years ago he was four times as old as his... (answered by richwmiller)

Ramon is r years old. His father is one year more than four times as old as Ramon. How... (answered by josgarithmetic)

BOB'S FATHER IS 3 TIMES OLD AS BOB. 4 YEARS AGO HE WAS 4 TIMES OLDER. HOW OLD IS... (answered by uksraj)

Bob's father is 3 times old as Bob. 4 years ago, he was 4 times older. How old is... (answered by fractalier)

bob's father is 3 times old as bob. 4 years ago, he was 4 times older. how old is... (answered by AAfter Search,ganeshindia)

Bob's father is 3 times old as Bob. 4 years ago, he was 4 times older. How old is... (answered by srinivas.g)

Bob's father is 3 times old as Bob. 4 years ago, he was 4 times older. How old is Bob? (answered by lwsshak3)

Romeo is one third as old as his father. Five years ago his father was four times as old... (answered by ankor@dixie-net.com)