If x : 7.5 = 7 : 17.5, then the value of x is -

If (a + b) : (b + c) : (c + a) = 6 : 7 : 8 and (a + b + c) = 14, then the value of c is = ?

In a library the ratio of story books and other books is 7 : 2 and there are 1512 story books. Due to collection of some…

The sum of two numbers is 40 and their difference is 4. The ratio of the numbers is = ?

The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and gi…

If $$\frac{a}{b} = \frac{b}{c} = \frac{c}{d},$$   then $$\frac{{{b^3} + {c^3} + {d^3}}}{{{a^3} + {b^3} + {c^3}}…

If 8a = 9b then the ratio of $$\frac{{\text{a}}}{9}$$ to $$\frac{{\text{b}}}{8}$$ is

In an alloy, the ratio of copper and zinc is 5 : 2. If 1.250 kg of zinc is mixed in 17 kg 500 gm of alloy, then the rati…