At a special clothing sale at the Crescent Oaks Country Club, after the cashier rings up your purchase, you select a slip of paper from a box. The slip of paper indicates the dollar amount, either $5 or $10, that is deducted from your purchase price. The probability of selecting a slip indicating $5 is 7/10, and the probability of selecting a slip indicating $10 is 3/10. If your original purchase before you select the slip of paper is $200, determine 

(a) The expected dollar amount to be deducted from your purchase. 

(b) The expected dollar amount you will pay for your purchase.