SOLUTION: Kristin has $20 and her younger brother Kurt has $10. They go to the market to buy fruits and together they spend $14. Kristin has three times as much money left as Kurt. How muc

Algebra ->  Customizable Word Problem Solvers  -> Evaluation -> SOLUTION: Kristin has $20 and her younger brother Kurt has $10. They go to the market to buy fruits and together they spend $14. Kristin has three times as much money left as Kurt. How muc      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 673765: Kristin has $20 and her younger brother Kurt has $10. They go to the market to buy fruits and together they spend $14. Kristin has three times as much money left as Kurt. How much did Kristin spend?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Kristin has $20 and her younger brother Kurt has $10.
They go to the market to buy fruits and together they spend $14.
Kristin has three times as much money left as Kurt.
How much did Kristin spend?
:
Let x = amt that brother Kurt has left
then
3x = amt Kristin has left
:
Bro spends + Kris spends = $14
(10-x) + (20-3x) = 14
30 - 4x = 14
-4x = 14 - 30
-4x = -16
x = $4 has brother Kurt
and
3(4) = $12 has Kris left
therefore
20 - 12 = $8 spent by Kris