Ramu's salary increased by 20% and then decreased by 30%.The effective change in his salary was ₹8560. What is his original salary?

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Solution

Let the original salary be x
then
after increasing it by 20%
salary=x+x×20/100
=x(1+.2)=1.2x
then 30% of it is decreased
then the salary is
1.2x-1.2x×30/100
=x(1.2-.36)
=.84x
given that the effective change is 8560
that is
x-.84x=8560
that is .16x=8560
x=53500
so his original salary=x=53500

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Ramu's salary increased by 20% and then decreased by 30%.The effective change in his salary was ₹8560. What is his original salary?

Let the original salary be x then after increasing it by 20% salary=x+x×20/100 =x(1+.2)=1.2x then 30% of it is decreased then the salary is 1.2x-1.2x×30/100 =x(1.2-.36) =.84x given that the effective change is 8560 that is x-.84x=8560 that is .16x=8560 x=53500 so his original salary=x=53500

Let the original salary be x
then
after increasing it by 20%
salary=x+x×20/100
=x(1+.2)=1.2x
then 30% of it is decreased
then the salary is
1.2x-1.2x×30/100
=x(1.2-.36)
=.84x
given that the effective change is 8560
that is
x-.84x=8560
that is .16x=8560
x=53500
so his original salary=x=53500