Question 172499
what is the total value if ana buy ah dress that have 35 discount? he pay 38 pesos and the total  or regular price of the dress was 280?


I'm not sure you have the data from the question quite right, but here goes.
When you have a percentage problem, just remember this equation:

part = percentage * whole


This is the easiest way to work with percentages. Every percent problem will give you 2 of these 3 items and you just need to solve this equation for the other one. 


In your question, the 280 pesos? is the regular price or the whole. The discount percentage is 35%. The part will be the amount of the discount once we calculate it. 

part = percentage * whole
part = 35% * 280 pesos
part = 98 pesos

This tells us that 98 pesos is the amount of the discount because it is 35% of the total price. The amount yet to be paid is 280-98 or 182 pesos. I don't know what the 38 pesos is.