(Crying)Shop A sells a dress for $280. This is 12% more than the price of a similar dress in shop B.

(a) Find the price of the dress in Shop B.

(b) During a sale, both shops offered an equal percentage discount on the

dress. Doris bought the dress in Shop B and found that she paid

$22.80 less than the discounted price in Shop A. What was the

percentage discount?