Question

Carl bought an airline ticket from boston to denver. two weeks ago, the cost of his flight was $300. this week the same flight cost $375. what is the percent increase in the cost of the airline tickets

Answer 1

75/300 = 0.25 or 25%

The 75 comes from the cost difference
The 300 comes from the original cost (cost 2 weeks ago)

Answer 2

The percent increase in the cost of the airline tickets is 25%.

Explanation:

1. Take the cost of Carl´s flight two weeks ago and subtract it from the cost of Carl´s flight this week:

`375-300=75`

2. Divide this obtained value by the cost of Carl´s flight two weeks ago:

`(75)/(300)=0.25`

3. Multiply the number obtained by one hundred to obtain the percent increase in the cost of the airline tickets:

`0.25*100=25`%

Therefore the percent increase in the cost of the airline tickets is 25%.