Quantitative Aptitude - Arithmetic Ability Questions

In what ratio should tea costing Rs 300/kg be mixed with tea costing Rs 200/kg so that the cost of the mixture is Rs 225/kg?

If sec (3x – 20°) = cosec (3y + 20°), then what is the value of tan (x + y)?

The simplest form of 3774/2958 is

There are red (A), yellow(B) and green (C) tokens in a bag. A : B :: 3 : 8, B : C :: 6 : 13. A : B : C is given by

If 35% of (x + y) = 40% of (x – y), then x is what percentage of y?

If x + y = 10 and xy = 4, then what is the value of x4 + y4?

If the simple interest on Rs. 400 for 10 years is Rs. 280, then rate of interest per annum is