Type the correct answer in each box. In a contest run by a store, each customer whose purchase exceeds $100 is allowed to draw a discount coupon from a jar. At the beginning of the contest, the jar contains 30 slips for a 5% discount, 15 slips for an x% discount, and 5 slips for a 15% discount. If the expected value of the first draw from the jar is 6.6%, the value of x is ___ . At one point in the contest, the jar contains 4 slips for a 5% discount, y slips for an x% discount, and 2 slips for a 15% discount. If the expected value on the next draw is 8%, the value of y is ___ .