Select the best word/set of words to fill in the blank : Don't worry ................ father, he will be fine.

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Description (বিবরণ) :

প্রশ্ন: Select the best word/set of words to fill in the blank : Don't worry ................ father, he will be fine.

ব্যাখ্যা:

ধরি, x কেজিতে 8% লাভ করে
 (1000 - x)  "  18%  "  " 8100×(1000 - x)×18100 = 1000×141008x  +  10(1000 - x) = 1000×148x  +  18000 - 18x = 14000 - 10x = 14000 - 1800010x = 4000 x = 400
18% লাভে বিক্রি করে (1000 - 400) বা 600 কেজি।



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