Quantitative Aptitude - Arithmetic Ability Questions

If tan A = 1/2 and tan B = 1/3, then what is the value of tan (2A + B)?

If 1 + secA = x, then the value of x is

On decreasing the price of a fan by 40%, its sales increases by 50%. What will be the percentage increase or decrease in its revenue?

What fraction of 2 hours is 12 seconds?

The marked price of a helmet is 30% more than its cost price. If the helmet is sold for Rs 744 after a discount of Rs 36, then what will be the profit percentage?

The difference between simple interest on a certain sum at the rate of 6% per annum for 5 years and 6 years is 25.8. What is the sum (in Rs)?

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 429, then what is the difference between the first and the third number?

Find the LCM of 0.63, 10.5, 2.1, 4.20