Quantitative Aptitude - Arithmetic Ability Questions

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

The area of a semicircle is 1925 sq.cm. Calculate its perimeter (in cm).

A student, by mistake, wrote 64 in place of 46 as a number at the time of finding the average of 10 given numbers & got the average as 50. The correct average of the numbers is

The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is

If x+1x2 = 3, then the value of x3+1x3 is:

5% more is gained by selling a watch for Rs. 350 than by selling it for Rs. 340. The cost price of the watch is

Instead of multiplying by 25, a student multiplies that number by 52 and gets 324 more than correct answer. Then that number is

What is the equation of the line perpendicular to the line 5x + 3y = 6 and having Y-intercept -3?