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

At an election,a candidate got elected by fetching $63 \%$ of the total votes. If $54982$ voters did not vote in favour of the elected candidate,what was the total number of votes polled?

Two students appeared for an examination. One of them secured $19$ marks more than the other and his marks were $60 \%$ of the sum of their marks. The marks obtained by them are

The radius of a sphere is increased by $10 \%$. The surface area increases by

Sixty-five percent of a number is $21$ less than four-fifth of that number. What is the number?

$405$ toffees were distributed equally among children in such a way that the number of toffees received by each child is $20 \%$ of the total number of children. How many toffees did each child get?