If 6.4 is 80 percent of 20 percent of a certain number ,what is the number ?
Solution
Correct Answer: Option C
মনে করি ,সংখ্যাটি =x
প্রশ্নমতে ,
x×80%×20% =6.4
বা, x×(80/100)×(20/100)=6.4
বা, (6.4×100×100)/80×20
∴ x =40
প্রশ্নমতে ,
x×80%×20% =6.4
বা, x×(80/100)×(20/100)=6.4
বা, (6.4×100×100)/80×20
∴ x =40
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