Subject
Quantitative Aptitude
Topic
Miscellaneous
A student first reduced a number by 20% and then increased it again by 20%. If the difference between the last number and the original number is 8, then the original number was?
A student first reduced a number by 20% and then increased it again by 20%. If the difference between the last number and the original number is 8, then the original number was?
ক)
200খ)
250গ)
300ঘ)
450Explanation
Suppose, Total marks= 100 20% reduced= 80 Then, 20% increased=80+80 of 20%=96 Difference=100-96=4 4 difference then orginal number =100 8 difference then orginal number=(100×8)/4 =200 20% increased= 96% Difference = 100-96 = 4 Difference is 4 when the original number is 100 ,, ,, 8 ,, ,, = 200Related questions
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