These are the two types of 'kadai' that a certain shop has. 1. Surya Steel Rs 235
2. Trish Non-stick Rs 372 Shalini visits this shop and buys the steel kadai. However, she changes her mind the next day and comes to take the non-stick one instead. She pays for the excess amount with a 500 rupee note. What amount should be returned to her?
