last week the game system was $450. This week the system is on sale for $337.50. By what percent is the price reduced?

25% reduced

you take 337.50 divide by 450 which gives you. 75

so you take 100% minus 75% and you get 25%

you can check the work by taking 450 time. 25 which gives you 112.5. and subtract that from 450 you'll end up with 337.50