The population of a town increased from $1,75,000$ to $2,62,500$ in a decade. The average per cent increase of population per year is

In an examination,$52 \%$ of the candidates failed in English and $42 \%$ failed in Mathematics. If $17 \%$ failed in both the subjects,then the percentage of candidates,who passed in both the subjects,was

If $200 \%$ of a number is $90,$ then what is the $80 \%$ of that number?

$39.897 \%$ of $4331 + 58.779 \%$ of $5003 = ?$

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

An army lost $10 \%$ of its men in war,$10 \%$ of the remaining died due to disease,and $10 \%$ of the rest were declared disabled. Thus,the strength of the army was reduced to $7,29,000$ active men. What was the original strength of the army?