Airline companies raise and lower their ticket prices based on the supply and demand. due to high numbers of fliers, one company decided to raise their ticket price for a first-class ticket to $192.50, which represents a 10% price increase.
how much did the first-class tickets cost before the price increase?

The raised price represents 110% of the original price (100% plus the extra 10%)

A percentage is converted into a decimal multiplier by dividing by 100:


To clarify the final stage, consider this (where is the original price):



From here, basic algebraic rules make solving for easy:


Therefore the original price of a ticket was $175