Quantitative Aptitude - Arithmetic Ability Questions

Abhinav is 2 times as good a workman as Balwant and therefore is able to finish a job in 36 days less than Balwant. Working together, they can do it in

X can finish 25% of a work in a day. Y can do 12.5% of the same work in a day. In how many days, will both of them finish the work together?

An alloy is made by mixing metal A costing Rs 2000/kg and metal B costing Rs 400/kg in the ratio A:B = 3:1. What is the cost (in Rs) of 8 kilograms of this alloy?

If x+1x = 2, then x2+1x2 = ?

9 hrs after a goods train passed a station, another train travelling at a speed of 72 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 3 hours. What is the speed of the goods train?

Find the value of x if 1-x24 = 1318

The HCF of two numbers is 12 and their LCM is 72. If one of the two numbers is 24, then the other number is

If A and B are the roots of the equation Ax2 – A2x + AB = 0, then what is the value of A and B respectively?