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২১ গ্যালন অকটেন মিশ্রিত পেট্টোল, পেট্টোল ও অকটেনের অনুপাত ৪ : ৩। এতে আর কত অকটেন মিশালে পেট্টোল ও অকটেনের অনুপাত ৩ : ৪ হবে?
৩ গ্যালন
৪ গ্যালন
৬ গ্যালন
৭ গ্যালন
ANSWER : 4
Descrption
<p>ধরি, 4ক + 3ক = 21 গ্যালন</p> <p><span class = "Apple - tab - span" style = "white - space: pre;"> </span>বা, 7ক = 21</p> <p><span class = "Apple - tab - span" style = "white - space: pre;"> </span>বা, ক = 3</p> <p>সুতরাং, 4ক(পেট্রোল) = 4*3 = 12</p> <p><span class = "Apple - tab - span" style = "white - space: pre;"> </span>3ক ( অকটেন) = 9</p> <p>প্রশ্নমতে, 12:9 + ক = 3:4</p> <p><span class = "Apple - tab - span" style = "white - space: pre;"> </span>বা, 27 + 3ক = 48</p> <p><span class = "Apple - tab - span" style = "white - space: pre;"> </span>বা, 3ক = 21</p> <p><span class = "Apple - tab - span" style = "white - space: pre;"> </span> <span class = "Apple - tab - span" style = "white - space: pre;"> </span>বা, ক = 7</p> <p>উত্তর:7</p>
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