If the price of petrol be raised by 20%, then the percentage by which a car owner must Reduce his consumption so as not to increase his expenditure on petrol is
1
\(16\frac{1}{3}\)
2
\(16\frac{2}{3}\)
3
\(15\frac{2}{3}\)
4
\(15\frac{1}{3}\)
If the price of petrol be raised by 20%, then the percentage by which a car owner must Reduce his consumption so as not to increase his expenditure on petrol is