A person spends 62.5% of his income. If his income
increases by 37.5% and expenditure increases by
80% but savings decreases by Rupees 1200 then find
his initial income.
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Answer:
stage : income(i) expenditure(e) savings(i-e)
assume 1 as 100%
before 1 5/8(62.5%) 3/8
after 1+(3/8)=11/8 5/8+1/2(80% of 5/8) 2/8
=9/8
change in savings =3/8 - 2/8
1200=1/8(12.5%)
100%=12.5%*8
=1200*8
= 9600
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