SOLUTION: In five years' time Tim will be three times as old as he was nine years ago. How old is he now?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: In five years' time Tim will be three times as old as he was nine years ago. How old is he now?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 814423: In five years' time Tim will be three times as old as he was nine years ago. How old is he now?
Found 2 solutions by TimothyLamb, Nkalitshana:
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
t + 5 = 3(t - 9)
t + 5 = 3t - 27
32 = 2t
---
t = 16
---
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
---
Convert fractions, decimals, and percents:
https://sooeet.com/math/fraction-decimal-percent.php
---
Calculate and graph the linear regression of any data set:
https://sooeet.com/math/linear-regression.php

Answer by Nkalitshana(1) About Me  (Show Source):
You can put this solution on YOUR website!
Let number of years = x






x+5=3(x-9)






Open brackets






x+5=3x-27






Collect like terms






x-3x=-27-5






-2x=-32






Divide by -2 both sides






Therefore x=16 initial age
Substitute x by 16 to the equation for current years
16+5=3(16-9)
Apply BODMAS by opening brackets first
16+5=3(7)
21=21
Therefore RHS=LHS thus making current Years = 21