What is the ratio whose terms differ by 40 and the measure of which is $$\frac{2}{7}$$ ?

A and B start an enterprise together, with A as active partner. A invests Rs. 4000 and Rs. 2000 more after 8 months. B i…

If p : q : r = 1 : 2 : 4, then $$\sqrt {5{p^2} + {q^2} + {r^2}} $$    is equal to -

If A : B = 2 : 3, B : C = 2 : 4 and C : D = 2 : 5, then A : D is equal to -

If $$\frac{a}{b}{\text{ = }}\frac{c}{d}{\text{ = }}\frac{e}{f}{\text{,}}$$    then each of them is eq…

If A : B = 7 : 9 and B : C = 5 : 4, then A : B : C is -

The ratio of milk to water in 80 litres of a mixture is 7 : 3. The water (in litres) to be added to it to make the ratio…

The falling height of an object is proportional to the square of the time. One object falls 64 cm in 2 sec then in 6 sec…