Quantitative Aptitude - Arithmetic Ability Questions

If x = at2 and y = 2at then

Anil can do a piece of work in 14 days which Rohit can do in 21 days. They worked together for few days after which Anil left. If Rohit worked alone for 3 days, find the total number of days it took to complete the whole work.

Sharmi starts from Pune and Ritesh starts from Mumbai to meet each other. The Speed of Sharmi is 37 kmph, while the speed of Ritesh is 41 kmph. If the distance between Pune and Mumbai be 234 km and both Sharmi and Ritesh start their journey at the same time, when they will meet?

The mean of 12 observations is 15. One more observation is included and the new mean becomes 16. The 13th observation is

Find the smallest 8 digit number which is exactly divisible by 121.

What is the value of x3-1x3+8 when 8x-8x-16=0 ?

If a1-2a+b1-2b+c1-2c = 12, then 11-2a+11-2b+11-2c value is

Product of 9b2, 3a2 and 4ab is