Quantitative Aptitude - Arithmetic Ability Questions

The compound interest earned in two years at 15% per annum is Rs 20640. What is the sum invested (in Rs)?

614% of 1600 + 1212% of 800 is equal to

If in a triangle ABC, Sin A = Cos B then the value of Cos C is

If 3x -­ 7 = 5x ­- 1, then the numerical value of (x ­- 4)2 is 

Rahul’s salary is 40% of Mohit’s salary. If Rahul’s salary is increased by 60% and Mohit’s salary is decreased by 20%, then Rahul’s salary will be how much percentage of Mohit’s salary?

P and Q can complete a task in 50 and 20 days respectively. In how many days can they complete 70% of the task if they work together?

By selling a table for Rs. 16,870, a shopkeeper suffers a loss of Rs. 1080. His loss percentage (rounded off to one decimal place) is

∆ABC is right angled at B. If m∠A = 30°, then find the value of (sinC + 1/3).