Express 35% as a simple fraction:

If the numerator of a fraction is increased by 250% and the denominator is increased by 400%. The resultant fraction is7/19 . What is the original fraction?

The value of $$ {\sqrt{x^{2}y}\over{\sqrt{xy^{2}}}}×\sqrt{y\over{x}}$$ is

What is the value of ½ % in decimals ?

The numerator of a fraction is 3 more than the denominator. When 5 is added to the numerator and 2 is subtracted from the denominator, the fraction becomes $$8\over 3$$ . When the original fraction is divided by$$5{1\over 2}$$, the fraction so obtained is:

When 0.090909.....is converted into a fraction, then the result is

What is the degree of the differential equation $$y=x\left({dy\over dx} \right)^2+ \left({dx\over dy} \right)^2 ? $$