The price of stock a at9am was $12.73 since than the price has been increasing at the rate of $0.06 per hour.at noon the price of stock b was $13.48. it begins to decrease at the rate of $0.14 per hour.if the stocks continue to increase and decrease at the same rates in how many hour will the price of the price of the stocks be the same?

0.43.

Step-by-step explanation:

The probability that the customer will pay with debit card = 50%

The percentage of customers who use coupons 30% and  35% pay with debit card.

Now calculate the probability  that the same person will use coupon:

P[Uses coupons | Pays with Debit card] = P[Uses coupons and pays with debit card] / P[ Pays with debit card]

= 0.3 * 0.5 / 0.35

= 3/7  or  0.4286 or 42.86%