Quantitative Aptitude - Arithmetic Ability Questions

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 fan was sold for Rs. 3600 at a loss of 4%. What would be the gain or loss percent ifit was sold for Rs. 4200?

Ravindra walks at 6 km/hr and Riya cycles at 11 km/hr towards each other. What was the distance between them when they started if they meet after 42 minutes?

At 24% discount the selling price of a washing machine is Rs 38000, what is the selling price if the discount is 40%?

Two successive discounts of 10% and 25% are given by Raman on a shirt. If the marked price of the shirt is Rs 600, then what is the value (in Rs) of discount?

If x1/4 + x-1/4 = 2, then what is the value of x81 + (1/x81)?

Common factor of 24b6c8d2, 18a6c2d4, 12a4b4 is

In the following questions two equations numbered I and II are given. You have to solve boththe equations and give answers

I. 2x ² –21x + 54 = 0

II. y ² –14y + 49 = 0