Given
A store is having a sale where customers can buy one shirt and get a second shirt for 30% off.
Kate wants to buy two shirts priced at $19 each.
Find out how much will she pay
To proof
let the total money kate pay be x.
As given in the question
Kate wants to buy two shirts priced at $19 each
in sale customers can buy one shirt and get a second shirt for 30% off.
First write 30% in the decimal form
= 0.3
than the equation written in the form
x = 19 + (19 - 0.3× 19)
x = 19 +( 19 - 5.7)
x = 19 + 13.3
x =$ 32.3
Kate pay $ 32.3
Hence proved