Quantitative Aptitude - Arithmetic Ability Questions

If  a+1/a = 3, then a3+1a3?

The radius of a hemisphere is 7 cm, find its volume?

The radius and height of a solid cylinder are increased by 2% each. What will be the approximate percentage increase in volume?

A train moves at a speed of 35 m/sec and crosses a tunnel of length 960 metres, in 40 seconds. What is the length (in metres) of the train?

By selling a used phone for Rs.6,160 Rajan got 44% less than what it cost him to buy it a few years ago. At what price should Rajan have been able to sell it to make a profit of 5%?

Present ages of Sai and Satheesh are in the ratio of 5:4 respectively. Three years hence, the ratio of their ages will become 11:9 respectively. What is Satheesh's present age in years?

In an arithmetic progression, if 9 is the 5th term, -26 is the 12th term, then -6 is which term?

(−12)[11+7×(−3)]÷{}[413−(−3)×(−6)]=