A vendor sells 45 lemons for Rs. 40 and loses 20%. How many lemons should he sell for Rs. 24 to gain 20%?
Correct answer C. 18
Explanation
CP of 45 lemons = 40/0.8 = Rs. 50, so each costs 10/9 rupee. For a 20% gain each must sell at 4/3 rupee, so Rs. 24 buys 24 × 3/4 = 18 lemons.
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