Answer:
$40
Explanation:
$28 is the reduced price 30%, i.e. the product has a (100-30)% = 70% of its original value.
Divide the discounted price by the decimal of the percentage it represents with respect to the original price, The result is the original price
70% = 70/100 = 0.7
28/ 0.7 = 40
Hope this helps.