Multiple choice

Pooja wants to sell a watch at a profit of 20%. She bought it at 10% less and sold it at 30 less, but still she gained 20%. The cost price of watch is

  1. 240

  2. 220

  3. 250

  4. 225

  5. 0
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let the original cost price be x. The original selling price is 1.2x. If she buys it at 10% less (0.9x) and sells it for 30 less (1.2x - 30), she gains 20%, meaning the new selling price is 1.2 * 0.9x = 1.08x. Setting 1.2x - 30 = 1.08x gives 0.12x = 30, which yields x = 250.

Keep practicing — related questions