Subject
Quantitative Aptitude
Topic
Miscellaneous
The cost of type 1 rice is 15 TK. per kg and type 2 rice is 20 TK. per kg.If both type 1 and type 2 are mixed in the ratio of 2:3,then the price per kg of the mixed variety of rice is -
The cost of type 1 rice is 15 TK. per kg and type 2 rice is 20 TK. per kg.If both type 1 and type 2 are mixed in the ratio of 2:3,then the price per kg of the mixed variety of rice is -
ক)
18 TKখ)
18.50গ)
19 TKঘ)
19.50 TKExplanation
(প্রশ্নঃ ধরণ-১ চালের প্রতি কেজির মূল্য ১৫ টাকা এবং ধরণ -২ চালের প্রতি কেজির মূল্য ২০ টাকা। ধরন-১ ও ধরন-২ চাল ২ঃ৩ অনুপাতে মিশ্রিত করা হলে মিশ্রিত চালের প্রতি কেজির গড় মূল্য কত হবে?) ধরি, ধরন-১ চালের ওজন x কেজি ধরন-২ চালের ওজন y কেজি প্রশ্নমতে, x:y=2:3 or,x/y=2/3 or,3x=2y x=2/3 y ----- (1) আবার,ধরন-১ ও ধরন-২ এর গড় মূল্য =(15x+20y)/(x+y) ={15×(2/3)y +20y}/{(2/3)y+y} =(30y×3)/5y =18 টাকাRelated questions
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