1. 10% discount and 10% tax: Suppose you want to buy a great pair of designer jeans that were originally priced at $75, but are now on sale for 10% off. When you buy the jeans, you need to pay sales...

1. 10% discount and 10% tax: Suppose you want to buy a great pair of designer jeans that were originally priced at $75, but are now on sale for 10% off. When you buy the jeans, you need to pay sales tax of 10% on the sales price. How much will you have to pay for the jeans?