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05 Apr 2023, 22:54
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prashantbacchewar
more easier way can be
as after two iterations the value remains the same ; so its know if one increases the value by 25% one should decrease the value by 20% to get the same value
so initial value 100 increase by 25% gives 125 decrease by 20% gives 100 again so substitute x=25 in the options and E give y =20 so answer is E less than 1 minute
22 Jul 2024, 13:51
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let : x = 25% , y =20 % . original = 100
100 >> +25% >> 125 >> -20% >> 100
now just plug the value of x in the answer choices. gives us E.(answer)
100 >> +25% >> 125 >> -20% >> 100
now just plug the value of x in the answer choices. gives us E.(answer)
08 Dec 2025, 08:45
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prashantbacchewar
Take the investment amount as 100 and x% as 50, so it becomes 150, to bring it back to 100, we will have to decrease it by 50/150 = 33.33%
So, x = 50 and y = 33.33
Substitute the value of x as 50 in the equation, only last one satisfies.
