Quantitative Aptitude - Arithmetic Ability Questions

If x+1x ≠0 and x3+1x3 = 0, then the value of x+1x4 is :

A bus moves at a speed of 84 km/hr after repairing and moves at a speed of 56 km/hr before repairing. It covers 2x distance in 8 hours after repairing.How much time (in hours) will it take to cover x distance before repairing?

Selling price of a calculator is Rs 13924 and profit percentage is 18%. If selling price is Rs 10266, then what will be the loss percentage?

The price of an article is cut by 42%, to restore to its original value, the new price must he increased by ______.

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

If a:b = 3:8, find the value of (5a ­ 3b)/(2a + b).

If a3 + b3 = 19 and ab = -6 , then what is the value of a + b?

What is the value of sin 300°?