I'm going with my brother to buy a gift that we have chosen for our mother. My brother says that after paying for his share of the gift, he still has 10 €. I borrow 5 € from him to complete my share. How much is the gift knowing that we have 85 € between us?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?