Quantitative Aptitude - Arithmetic Ability Questions

If 5x = 30-y = 6z, then what is the value of (xy + yz + zx)/xyz?

If the cost price of 25 pens is equal to the selling price of 20 pens, then the profit percent is

12 copies of a book were sold for Rs. 1800 thereby gaining cost price of 3 copies. The cost price of a copy of the book is

A watch is listed for Rs.230 and is sold at a discount of 12%, then the sale price of the watch is

If (x/y)a-4 = (y/x)2a-5, then what is the relation between x and y?

The bar chart given shows the sales of 3 types of cars in the Indian automotive industry over 4 years. All the sales figures have been shown in terms of 000 units.

What is the simple annual growth rate (in %) in the sales of SUV from 2009 to 2012?

What is the value of [12/(√5 + √3)] + [18/(√5 – √3)]?

(1 + sec 20° + cot 70°)(1 - cosec 20° + tan70°) is equal to