If the sum of two whole numbers is 24 more than their difference, then one of the number must be

a) 0 b) 6 c) 12 d) 48

C) 12

Step-by-step explanation:

A + B = 24 + A - B

Rearrange to get the integer on it's own:

A - A + B + B = 24

2B = 24

Solve for B

B = 12

If B = 12, A = 12

The sum = 24

And the difference = 0

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p