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…

The salaries of A, B and C are in the ratio 1 : 3 : 4. If the salaries are increased by 5%, 10% and 15% respectively, th…

If a : b = 5 : 7 and c : d = 2a : 3b then ac : bd is = ?

The respective ratio between the monthly salaries of Rene and Som is 5 : 3. Out of her salary Rene gives $$\frac{{\text{…

If x : y = 3 : 1, then x<sup>3</sup> - y<sup>3</sup> : x<sup>3</sup> + y<sup>3…

The ratio of weekly income of A and B is 9 : 7 and the the ratio of their expenditure is 4 : 3. If each saves Rs. 200 pe…

The incomes of A and B are in the ratio 3 : 2 and their expenditure are in ratio 5 : 3. If each saves Rs. 1000, then, A'…

Six coins of gold and silver of equal weights are melted and new coins are cast. The ratio of gold and silver in one of …