Math question from my real life shoe store shopping experience.

Question

Leah and Ariah went to the shopping store where there was a deal- Buy two shoes and get the lesser values pair of shoes for 25$. Leah bought a shoe worth 70$ and so Ariah asked Leah to pay for her shoes (Originally valued at $60... but now Leah pays only $25 because its the second shoe she buys). Later on, Ariah transfers $25 to Leah's bank account. However, Leah feels like it was not fair that Ariah gets her shoe for so much lesser solely because of Leah's while Leah had to pay the full price for her shoe. So, how would we solve this problem for Leah? How much more should Ariyah pay Leah( considering she saved $35 becauss of Leah) so that it is fair for both of them?

Answer 1

I agree with Joel R

Answer 2

If the first pair of shoes, S₁, is $70 and the second pair of shoes, S₂, is $25 then the total amount paid for is $95. To make it fair, both Leah and Ariah should have gone half-and-half spending a total of $47.50 each.