The fourth proportion to 5, 8, 15 is-

If $$\frac{x}{2} = \frac{y}{3} = \frac{z}{4} = $$   $$\frac{{2x - 3y + 5z}}{k}{\text{,}}$$   &nbsp…

In a business, the ratio of the capitals of A and B is 2 : 1, that of B and C is 4 : 3 and that of D and C is 6 : 5. The…

A box has 210 coins of denominations one-rupee and fifty paise only. The ratio of their respective values is 13 : 11. Th…

$$\frac{7}{5}{\text{of }}58 + \frac{3}{8}{\text{of }}139.2 =\, ?$$

If a and b are rational numbers and $$a + b\sqrt 3 $$   $$ = $$ $$\frac{1}{{2 - \sqrt 3 }}{\text{,}}$$ &nb…

If 20% of A = 30% of B = $$\frac{1}{6}$$ of C, then A : B : C 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…