Marcy bought plane tickets for $345 if she sees the same ticket on sale for $405 a week later what percent increase did the airline use

actual increase: 405-345 = 60

% increase: 60/345 = 0.1739 = ____ %

Belks is having a 20% off sale on pajama pants if the sale price is $12.50 what was the original price of the pajama pants

well, 20% off means the sale price is 80% of the original, right?

1. (405/345) * 100% = 117.4%.

% increase = 117.4%-100% = 17.4%.

2. 0.8P = 12.50

To calculate the percent increase, we need to find the difference between the new price and the original price, and then express it as a percentage of the original price.

First, let's find the difference between the new price ($405) and the original price ($345):

$405 - $345 = $60

Next, we need to determine what percentage of the original price the increase is. To do this, we divide the difference by the original price and then multiply by 100:

($60 / $345) * 100 ≈ 17.39%

Therefore, the airline used a 17.39% increase in ticket price.