Subject
পেট্রোবাংলা
Topic
গ্যাস ট্রান্সমিশন কোম্পানি লিমিটেড (সহকারী ব্যবস্থাপক) - ১০.০৩.২০১৬
In what proportion must rice at Tk. 40/kg be mixed with rice at Tk. 45/kg so that the mixture costs Tk. 41.25/kg?
In what proportion must rice at Tk. 40/kg be mixed with rice at Tk. 45/kg so that the mixture costs Tk. 41.25/kg?
ক)
3 : 1খ)
1 : 2গ)
1 : 1ঘ)
2 : 1ঙ)
3 : 1Explanation
প্রশ্নে বলা হচ্ছে, 40 টাকা kg দরের চালের সাথে 45 টাকা kg দরের চাল কী অনুপাতে মেশালে মিশ্রিত চালের দাম kg প্রতি 41.25 টাকা হবে? ধরি, চালগুলো x’ y অনুপাতে মেশাতে হবে। প্রশ্নমতে, 40x + 45y = 41.25 (x + y) ⇒ 40x + 45y = 41.25x + 41.25y ⇒ 1.25x = 3.75y ⇒ x/y = 3.75/1.25 ⇒ x : y = 3 : 1Related questions
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