If the income tax is increased by $19\%$, the net income is reduced by $1\%$. The rate of income tax is :

X has twice as much money as that of Y and Y has $50\%$ more money than that of Z. If the average money of all them is $₹110$, then the money which X has, is:

The price of sugar is increased by $20\%$. As a result, a family has decreased its consumption by $20\%$. The expenditure of the family on sugar is decreased by :

The price of sugar rises by $25\%$. If a family wants to keep their expenses on sugar, the same as earlier, then the family will have to decrease the consumption of ·sugar by :

The price of an article has been reduced by $25\%$. In order to restore the original price, the new price must be increased by :

The price of tea is decreased by $10\%$. If a family wants to keep their expenses on tea, the same as earlier, then the family will have to increase the consumption of tea by: 

The price of sugar is increased by $20\%$. If the expenditure is not allowed to increase, the ratio between the reduction in consumption and original consumption is :

A reduction of $20\%$ in the price of sugar enables a purchaser to obtain $3 \mathrm{kg}$ more for $₹120$. The original price of sugar per kg is :

The price of an article is reduced by $25\%$ and its daily sale is increased by $30\%$. The net effect on the daily sale receipts is :