If Alex bought 90 markers and sold them at a loss equivalent to the selling price of 15 markers, how many times is the cost of 90 markers compared to the selling price of 90 markers?

Answer Choices

Correct answer marked below

4/3

5/4

6/5

7/6

Correct

8/5

See the full step-by-step explanation

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Track your performance and improve

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Start for free Sign in

Explanation

Preview

Official Explanation

Official

Let the cost price of 90 markers be $90 ($1 per marker), and let the selling price of one marker be p. Since Alex sold at a loss, we have 90 - 90p = 15p, which simplifies to 90 = 105p,…

Read the full explanation

Create free account Sign in

Comments

No comments yet

Be the first to share your thoughts and help others understand it better.

What this question tests

What it tests

Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.

Common trap

Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.