Problema Solution
In January 2012, gas was selling for $3.60 a gallon. The price of a gallon of regular unleaded dropped to $3.50 on February 11, 2012. What was the percent decrease? (Round to the nearest hundredth percent.)
Answer provided by our tutors
percent decrease = ((old value - new value)/old value) ×100
old value = $3.60
new value = $3.50
percent decrease = ((3.60 - 3.50)/3.60)*100
percent decrease = %2.78
On February 11, 2012 we had an decrease of 2.78% of the January 2012 cost.