A man saved 20% of his income.if his income decrease by 20% and he saves the same as before. by how much % his expenditure decrease?
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Answer:
16%
Step-by-step explanation:
let the income be x
saving =20%
therefore expenditure=80%
i.e (80/100)*x
after 20%decrease,
new income = (80/100)*x
therefore
new expenditure=80%of(80/100)*x[since he saves 20%]
=16/25*x
therefore decrease in expenditure
80/100x - 16/25x
=16/100x
=16%
siddhantsinha2402200:
let the income be rs 100
then acc to first case he saves rs 20 and spends rs 80
now new income becomes rs 80
but saving is still of rs 20
therefore expenditure = rs 60
decrease in expenditure= 80-60
=rs20
%decrease will be
20/80*100
i.e = 25%
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