The price of sugar has fallen by $10 \%$. How many quintals can be bought for the same money which was sufficient to buy $18$ quintals at the higher price?

If $X = 600$ and $Y = 800$,then $X$ is how much percent less than $Y$?

In a mixture of milk and water,the proportion of water by weight was $75 \%$. If $15 \text{ gm}$ of water is added to $60 \text{ gm}$ of this mixture,what will be the new percentage of water by weight (in $\%$)?

Sonal spent $Rs. 45760$ on the interior decoration for her home,$Rs. 27896$ on buying an air conditioner,and the remaining $28 \%$ of the total amount she had as cash with her. What was the total amount?

An index of $12$ shares contains,among others,the shares of Vision Power,Vision Infra,and Vision Communication with weightage of $7\%$,$13\%$,and $15\%$ respectively. What is the increase in the prices of other shares,if these three rise by $9\%$,$10\%$,and $4\%$ respectively,while the index rises by $6\%$?

$3.5$ can be expressed in terms of percentage as: