Given,
Ravi's earning = ₹3,60,000
Income tax paid = ₹24,000
a) Ratio of income to income tax = ₹360000₹24,000
= 151 = 15:1 [on dividing numerator and denominator by 24000]
b) Income of Ravi after paying income tax = Income - Tax paid
= ₹(3,60,000 - 24,000) = ₹3,36,000
Ratio of income tax to income after paying income tax = Rs. 24,0003,36,000
= 114=1:14 [on dividing numerator and denominator by 24,000]