$0.025$ in terms of rate per cent is:

If the length of a rectangle is increased by $20\%$ and its breadth is decreased by $10\%$,what will be the impact on its area?

Which is the greatest number?

Two numbers are respectively $20 \%$ and $30 \%$ less than a third number. What is the second number as a percentage of the first?

$270$ candidates appeared for an examination,of which $252$ passed. The pass percentage is (in $\%$)?

In an examination,a student must get $36 \%$ marks to pass. $A$ student who gets $190$ marks failed by $35$ marks. The total marks in that examination is