Quantitative Aptitude - Arithmetic Ability Questions

Bhanu takes a total of 6 hrs 50 min in walking a distance and running back to same place where she started. She could walk both ways in 8 hrs 30 min. The time taken by her to run both ways is :

A can do a work in 15 days and B in 20 days. If they work on it together for 5 days, then what fraction of work is left?

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?

The marked price of an article is 60% more than its cost price. If the article is sold for Rs 300 after offering a discount of Rs 20, then what will be the profit percentage?

A man spends 59% of his income and saves the rest. What percentage of his expenditure does he save?

Find the common factor of (3757+4357) and (3737+4337) ?

If 2x + 6y = 3xy and 10x -­ 3y = 4xy, find x, y.

The length of the diagonal of a square is 12 cm. Find its area (in cm2).