If 25% of a number is 75. then, 80% of the number is :

A 300

B 180

C 375

D 240

Solution

Correct Answer: Option D

মনে করি ,সংখ্যাটি =x
অতএব , x এর 25%=75
বা, x× 25%=75
বা, x ×  (25/100)=75
বা, x =(75× 100)/25
বা,x =300
এখন , 300 এর 80%
         =300 ×  80/100
         =240

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