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

$40 \%$ of $? = 240$

The product of one-third of a number and $150 \%$ of another number is what percent of the product of the given numbers?

$x \%$ of $y + ? \%$ of $x = x \%$ of $(x + y)$

Rajiv spends $20 \%$ of his salary on food,$15 \%$ on conveyance,$10 \%$ on education,and $35 \%$ on house rent. If he spends $Rs. 1950$ on education,how much does he spend on conveyance?

The population of a variety of tiny bushes in an experimental field increased by $10 \%$ in the first year,increased by $8 \%$ in the second year,but decreased by $10 \%$ in the third year. If the present number of bushes in the experimental field is $26730$,then the number of bushes in the beginning was: