Let us say, the numbers are "a" and "b"
their sum is -13
a + b = -13
their product is 40
a * b = 40

solve for "a",
what is "b"? well, b = 40/a :)
Answer:
$36.4
Step-by-step explanation:
Given
Cost of Jean = $56
Percent markdown = 35%
Discount = 35% of $56
Discount = 0.35 * 56
Discount = $19.6
New price = $56 - (35% of $56)
New price = $56 - 19.6
New price = $36.4
hence the price that will replace B is $36.4
Ranges from about 510 to 3380 grams