Quantitative Aptitude - Arithmetic Ability Questions

What is the equation of the line whose y-intercept is -3 and makes an angle of 45° with the positive x-axis?

If the perimeter of a semicircle is 36 cm, then find its area (in cm2).

If xy+yz+zx = 1, then the value of (1+y2)(x+y)(y+z) ?

Dipali bought a set of cups for Rs. 375, but then had to sell it later to clear old stocks for Rs. 345. What is the percentage of loss that she incurred?

Amit's age is four times the age of Babli. Babli's age is three times the age of Priya. If the present age of Priya is 5 years, what is the present age (in years) of Amit?

A non-zero number is greater than 7 times its reciprocal by 9.3. What is the number?

The average salary of all workers in a workshop is Rs.12000. The average salary of 7 technicians is Rs.15000 and the average salary of the rest is Rs.9000. The total number of workers in the workshop is

If x+1x = 4, then what is the value of x6+1x6 ?