If the price of a commodity be raised by 10%, find out by how much per cent must be householder reduce his consumption of that commodity, so as not to increase his expenditure.
1
\(11\frac{1}{{11}}\% \)
2
\(9\frac{1}{{11}}\% \)
3
\(7\frac{1}{{11}}\% \)
4
\(26\frac{2}{{3}}\% \)