Quantitative Aptitude - Arithmetic Ability Questions

Mehdi can complete a work in 25 hours. If he is joined by Jahnavi who is 50% more efficient, in what time will they together finish the work?

If x + (1/x) = 2, then what is the value of x21 + (1/x1331)?

The LCM of two numbers is 66. The numbers are in the ratio 2:3. The sum of the numbers is

The third proportional of two numbers 9 and 24 is

Mandeep works 3 times as fast as Sampat. If Sampat can complete a job alone in 60 days, then in how many days can they together finish the job?

For an amount, simple interest at the rate of interest of 12% per annum for 6 years is Rs 25920. What will be the compound interest (in Rs) on same amount at the rate of interest of 8% per annum compounding annually for 2 years?

S, T and U started a business by investing Rs 4200, Rs 6300 and Rs 8400 respectively. S left the business after 3 months, T left 6 months after the business had started and U remained in the business till one year. At the end of one year the total profit is Rs 6000. What is the U’s share (in Rs) in the profit?

If x+1x=-2,then the value of x7+1x7