Madan pays income tax at the rate of 10% . If his income increased by 10% and his tax rate increases t 15% , his
net income would increase by Rs. 350. What is Madan's income ?
Let Madan's income be Rs.`x`
Then, Net income = (100 - 10)% of Rs.`x` = 90% of Rs. `x` = Rs. `(9x)/(10)`
New net income = 85% of 110% of Rs. `x` = Rs. `(85/100 xx 110/100 xx x)` = Rs. `187/200 x`
`:.` `(187x)/(200) - (9x)/(10) = 350 hArr (7x)/(200) = 350 hArr x = ((350xx 200)/(7))` = 10000.
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