Question

Gunnar bought a new bike at a sale price of s = 0.75b, where b represents the original cost of the bike. How could gunnar rewrite this expression to show the percent discount that he revived?

1. S= 1 – 0.25b
2. S= 1 – 0.75b
3. S= (1–0.25) b
4. S= (1 – 0.75) b

Answer 1

• 3) S= (1–0.25) b

Explanation:

0.75 represents a 25% discount:

• 0.75 = 1 - 0.25

If original cost is b and sale price is S, it can be expressed as:

• S = (1 - 0.25)b

Correct choice is 3