Quantitative Aptitude - Arithmetic Ability Questions

X can complete a task in 8 days, whereas Y can complete the same task in 10 days. If they work together, in how many days will the task be completed?

The reciprocal of the sum of the reciprocals of 8/7 and 5/6 is:

In how many months will Rs 8,000 yield Rs 2,648 as compound interest at 20% per annum compounded semi-annually?

To go a distance of 40 km upstream a rower takes 8 hours while it takes her only 5 hours to row the same distance downstream. What was the rower's speed in still water?

If tan(A/2) = x, then the value of x is

What is the value of Sin 60° + (1/2)Cosec 45°?

What will be the roots of the quadratic equation x2 - 25x + 156 = 0?

The weights of two iron balls are 3.5 kg and 7.5 kg. What is the percentage weight of the 1st ball with respect to 2nd ball.