# GRE Question of the Day (June 4th)

- Jun 4, 02:00 AM Comments [0]

## Math

A manufacturer makes umbrellas at the cost of c dollars per umbrella, and sells them at the retail price of r dollars each. How many umbrellas can it afford to sell at the below-cost rate of b dollars per umbrella and still make a 100% profit on its lot of x total umbrellas?

A. $${\frac{{b(2c-r)}}{{(x-r)}}}$$

B. $${\frac{{2x(c-r)}}{{(b-r)}}}$$

C. $${\frac{{x(2c-r)}}{{(b-r)}}}$$

D. $${\frac{{2b(c-r)}}{{(x-r)}}}$$

E. $${\frac{{2(xc-r)}}{{(x-r)}}}$$

Question Discussion & Explanation