If Rs. $2800$ is $\frac{2}{7}$ of the value of a house,what is the total worth of the house (in Rs.)?

If $35 \%$ of a number is $12$ less than $50 \%$ of that number,then the number is:

Half of $1$ per cent written as a decimal is

If the side of a square is increased by $30 \%,$ its area is increased by:

$A$ shopkeeper undertakes to supply $2000$ tables at $Rs. 1725$ each. He estimates that if $10\%$ are defective,which will be sold at $50\%$ of the original price,then the profit will be $15\%$ on his whole outlay. When the tables were supplied,$70\%$ of the tables were found defective. What loss did the shopkeeper incur?

$45 \%$ of $1500 + 35 \%$ of $1700 = ? \%$ of $3175$