SOLUTION: At Tehachapi College the tuition has increased 20% for each of the last two years. If tuition this year is $6,000 what was the tuition 2 years ago? Round to nearest dollar.

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: At Tehachapi College the tuition has increased 20% for each of the last two years. If tuition this year is $6,000 what was the tuition 2 years ago? Round to nearest dollar.       Log On


   

Question 350606: At Tehachapi College the tuition has increased 20% for each of the last two years. If tuition this year is $6,000 what was the tuition 2 years ago? Round to nearest dollar.
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
At Tehachapi College the tuition has increased 20% for each of the last two years. If tuition this year is $6,000 what was the tuition 2 years ago? Round to nearest dollar.
.
Let x = tuition before increase
.
One year ago:
x+.20x = 6000
x(1+.20) = 6000
x(1.20) = 6000
x = 6000/1.20
x = $5000
.
Two years ago:
x(1.20) = 5000
x = 5000/1.20
x = 4166.6667
x = $4167 (solution)