Arithmetic

The ratio of salary of worker A and B is 3:2. If salary of each is increased by Rs 4000, new ratio is 40:27. Salary of A is:

Ratio of zinc and copper in brass is 13:7. How much zinc is there in 100kg of brass?

If 0.75 : x :: 5 : 8, then x is:

What is the ratio of area of two circles if their circumference ratio is 2:3?

A, B, C together earn Rs 150 per day while A and C earn Rs 94 and B and C earn Rs 76. Earnings of C is:

Find the mean proportional between 0.08 and 0.18.

In a mixture of 30L, ratio of acid to water is 2:3. How much water must be added to make it 2:5?

Which is greater? 5:8 or 9:14?

The ratio of third proportional to 12 and 30 and the mean proportional between 9 and 25 is:

If $A:B = 1/2 : 3/8$, $B:C = 1/3 : 5/9$ and $C:D = 5/6 : 3/4$, then $A:B:C:D$ is:

If $a/b = c/d = e/f = 3$, then $(2a^2 + 3c^2 + 4e^2) / (2b^2 + 3d^2 + 4f^2)$ is:

A sum of money is divided into parts $x, y, z$ in ratio $2:3:5$. If $z$ is Rs 300 more than $x$, find $y$.

The ratio of 25cm to 1m is:

The ratio of students in three classes is 2:3:5. If 20 students are increased in each class, ratio becomes 4:5:7. Total students initially:

If $x:y = 5:2$, then $(8x+9y) : (8x+2y)$ is:

Two numbers are in ratio 7:11. If 7 is added to each, the ratio becomes 2:3. Smallest number is:

If $A/3 = B/4 = C/7$, then $(A+B+C)/C$ is:

Ratio of the areas of two squares is 25:36. Ratio of their perimeters is:

The ratio of Rs 5 to 50 paisa is:

If $x:y = 2:1$, then $(x^2-y^2) : (x^2+y^2)$ is: