Quantitative Aptitude - Arithmetic Ability Questions

Total surface area of a cube is 486 sq cm, find sum of length of all its edges?

A shopkeeper purchased a chair whose marked price is Rs 1400, at two successive discount of 20% and 30% respectively. If he sells the chair for Rs 1176, then what is the profit percentage?

Present age of Anil and Rajesh are in the ratio of 11 : 6 respectively. 9 years ago, their ages were in the ratio of 7 : 3. If the Pankaj’s present age is 1/4 of the Anil’s present age, then what is the Pankaj’s present age (in years)?

∆DEF is right angled at E. If tanD = 4/3, then what is the value of tanF ?

If  x=2+32-3, then what is the value of x+1/x ?

A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:

At what point does the line 2x - 3y = 6 cuts the Y axis?

What is the value of sec 4π/3?