Gabriela bought a new pair of glasses at the store when they were having a 30%30/% 30% 30, percent off sale. If the regular price of the pair of glasses was $72/$72 $72 dollar sign, 72, how much did Gabriela pay with the discount?

For this case you can solve the problem by a simple rule of three:

72 - - - > 100%

x - - - > 30%

Clearing x we have:

x = (30/100) * (72) = 21.6 $

Then, we must subtract this value from the original price:

72-21.6 = 50.4 $

answer:

Gabriela pays $ 50.4 with the discount