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  1. If the income tax is increased by 19%, the net income is reduced by 1%. The rate of income tax is
    1. 6%
    2. 4%
    3. 5%
    4. 7.2%
Correct Option: C

Let the income be ₹x and the rate of income tax be y %
According to the question,

xy × 1.19
-
xy
100100

= x -
xy
×
1
100100

⇒ 1.19 xy – xy = x -
xy
100

⇒ 1.19y = 1 -
y
100

y
+ 1.19y = 1
100

⇒ y
1 + 19
= 1
100

⇒ y =
100
= 5%
20



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