Quantitative Aptitude - Arithmetic Ability Questions

The ratio of the volume of two cylinders is 7 : 3 and the ratio of their heights is 7 : 9. If the area of the base of the second cylinder is 154 sq. cm, then what will be the radius (in cm) of the first cylinder?

If 20 men working 8 hours per day can complete a piece of work in 21 days. How many hours per day must 48 men work to complete the same job in 7 days?

If the time increases by 5 years, then simple interest increases by Rs 3000 on a sum of Rs 5000. What is the rate (in percentage) of interest per annum?

If 5/2 - (6/5)(x - 15/2) = -x/5, then what is the value of x?

The value of 8(sin6θ + cos6θ) - 12(sin4θ + cos4θ) is equal to

If x + y = 3, then what is the value of x3 + y3 + 9xy?

If x – 4y = 0 and x + 2y = 24, then what is the value of (2x + 3y)/(2x – 3y)?

If 4x -7 < x - 2 and 5x +2/3 ≥ 3x + 1; then x can take which of the following values?