Quantitative Aptitude - Arithmetic Ability Questions

By what fraction selling price (S.P.) must be multiplied to get the cost price (C.P.) if the loss is 20% ?

P bought an article for Rs. 1600 and sold it at a profit of 10%. What would have been the increase in the profit percent if it was sold for Rs. 1840?

A fraction is greater than its reciprocal by 9/20. What is the fraction?

An engineering student has to secure 25% marks to pass. He gets 47 and fails by 43 marks. What are the maximum marks of the examination?

If α and β are the roots of equation x2 – 2x + 4 = 0, then what is the equation whose roots are α3/β2 and β3/α2?

What is the value of sin (90° + 2A)[4 – cos2(90° – 2A)]?

In the following question, select the odd letter group from the given alternatives.

Marked price of an item is Rs 200. On purchase of 1 item discount is 22%, on purchase of 4 items discount is 33%. Rabia buys 5 items, what is the effective discount?