Quantitative Aptitude - Arithmetic Ability Questions

If a/b = c/d = e/f = 2/5, then what is (5a + 3c + 2e) : (5b + 3d + 2f)?

Slope of the side DA of the rectangle ABCD is 5/3. What is the slope of the side AB?

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 506, then what is the difference between the first and the third number?

A shopkeeper cheats to the extent of 11% while buying and selling fruits, by using tampered weights. His total gain in percentage is

Select the odd letters from the given alternatives.

In the following question, select the odd letters from the given alternatives.

If a - b = 10 and ab =-21, then what is the value of a3-b3 ?

N is the smallest three digit prime number. When N is divided by 13, then what will be the remainder?