Multiple choice

நான் 120 புத்தகங்களை ஒவ்வொன்றும் ரூ.3 வீதத்தில் வாங்கினேன். இதில் 3- ல் ஒரு பகுதியை ஒவ்வொன்றும் ரூ. 4 -க்கும் இதில் பாதியை ஒவ்வொன்றும் ரூ. 5-க்கும் மீதமுள்ளதை அதனுடைய அடக்க விலைக்கும் விற்பனை செய்கிறேன். என்னுடைய லாப சதவீதம் என்ன? I bought 120 books at Rs.3 each. I sell one-third of it for Rs.4 each and half of it for Rs.5 each and the rest for its modest price. What is my profit percentage?

  1. 44 %

  2. 44 4/9 %

  3. 44 2/3 %

  4. 45 %
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total cost = 120 * 3 = 360. 1/3 sold (40 books) at 4 each = 160. Half sold (60 books) at 5 each = 300. Remaining (20 books) at cost (3 each) = 60. Total revenue = 160 + 300 + 60 = 520. Profit = 520 - 360 = 160. Profit % = (160 / 360) * 100 = 1600 / 36 = 400 / 9 = 44 4/9%.

AI explanation

The total cost price for 120 books is 120 * 3, which equals Rs. 360. He sells 1/3 of the books, which is 40 books, at Rs. 4 each to get Rs. 160. He then sells 1/2 of the books, which is 60 books, at Rs. 5 each to get Rs. 300, and the remaining 20 books at their cost price of Rs. 3 each to get Rs. 60, making his total selling price 160 + 300 + 60, which equals Rs. 520. Using the profit percentage formula, ((520 - 360) / 360) * 100, we get 160 / 360 * 100, resulting in 44 4/9 %. The profit percentage is 44 4/9 %.

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