Quantitative Aptitude - Arithmetic Ability Questions

If a3 + b3 + c3 - 3abc = 0, then the value of a2/bc + b2/ac - 3.

What is the x – intercept of the linear equation 18x + 25y – 900 = 0?

The ratio between Ram's age and Rahim's age is 10:11. What is the age of Rahim in percentage of Ram's age

While selling a shirt, a shopkeeper gives a discount of 7%. If he gives discount of 9% he earns Rs. 15 less on profit. The market price of the shirt is :­

If (secA - tanA)2 = x, then the value of x is

In the following question, select the related number from the given alternatives.
 
47 : 57 : : 93 : ?

If A alone can do a job in 40 days then, in how many days can B alone do the job if together they can do the job in 8 days?

A factory buys 10 machines. 2 Machine­A, 3 Machine­B and rest Machine­C. Prices of the machines are Rs 95000, Rs 60000 and Rs 50000 respectively. What is the average cost of these machines?