Adria first reduced a number by 20% and then increased it again by 20% If the difference between the last number and the original number was 8, then the original number was:
Solution
Correct Answer: Option A
Suppose,
Original number= 100 at 20% less current number=(100-20)=80 20% increase, number is (80+80 x 20/100)=96 so,difference=(100-96)=4 if difference 4 then original number 100 if difference 8 then original number 100x8/4=200
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