Subject
Bank Exam
Topic
Dutch-Bangla Bank Ltd. - Assistant Officer - 2017
A businessman has 1000 kg of rice, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. How much rice did he sell at 18% profit ?
A businessman has 1000 kg of rice, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. How much rice did he sell at 18% profit ?
ক)
400 kgখ)
600 kgগ)
640 kgঘ)
700 kgঙ)
None of theseExplanation
Solution: প্রশ্নে বলা হচ্ছে যে, এক ব্যবসায়ীর নিকট 1000 kg চাল ছিল যার কিছু অংশ 8% লাভে এবং বাকি অংশ । 18% লাভে বিক্রয় করে মোটের উপর 14% লাভ করলো । 18% লাভে সে কত কেজি চাল কিনেছিল ? ধরি, x কেজি চাল 8% লাভে বিক্রয় করে । 18% লাভে বিক্রয় করে (1000 - x) কেজি চাল । প্রশ্নমতে, x এর 8% + (1000 - x) এর 18% = 1000 এর 14% => => 8x + 18000 - 18x = 14000 [উভয় পক্ষকে 100 দ্বারা গুণ করে ] => - 10x = 14000 - 18000 => - 10x = - 4000 => 10x = 4000 x = 400 অতএব, 18% লাভে বিক্রয় করেছিল (1000 - 400) বা 600 কেজি চাল ।Related questions
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