Question

in March Rohan's monthly expenditure was 90% of his monthly income is monthly income increased by 30% and his monthly expenditure increases by 20% when compared to the previous months then the percentage increase in his monthly savings
1)130 %
2)120 %
3)110percent
4)125 percentage

Answer 1

130%
is the answer hopes it help u

Answer 2

income=x,expenditure be 90/100*x=9/10x
savings=income-expenditure
=1/10x
income=x+30/100x=13/10x, expenditure=9/10x+(20/100*9/10x)=9/10x+9/50x
=54/50x=27/25x
savings=13/10x-27/25x=(65x-54x)/50=11x/50
increase in savings=11x/50-x/10=(11x-5x)/50=3x/25
savings percentage= increase / initial*100=(3x/25)/1x/10*100
=3x/25*10/x*100=6/5*100=150percent
i think so it may help i know it is not among the answers maybe i hv dn wrong calculations and is not able to rectify but the formula used may help u to find the ans