Quantitative Aptitude - Arithmetic Ability Questions

Vikram and Vivek can finish a work in 50 days. They worked together for 20 days and then left. How much work has been done by them?

Cost price of 28 articles is equal to Sale price of 21 articles, then percentage of profit is

In a right angled triangle if hypotenuse is 20 cm and ratio of other two sides is 4:3, the length of the sides are

The sum of a fraction and 3 times its reciprocal is 19/4. What is the fraction?

If a boat goes upstream at a speed of 21 km/h and comes back the same distance at 28 km/h. What is the average speed (in km/hr) for the total journey?

Ram and Shyam undertook a work for Rs 5600. Ram alone can do the work in 5 days and Shyam alone can do the work in 9 days. If they worktogether, then what will be the difference (in Rs.) in the amount they receive?

If x/y = 4/9, then what is the value of (7x2 – 19xy + 11y2)/y2 ?

∆ABC is right angled at B. If m∠A = 30°., then Sec C =?