Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?

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

A 150 m long train, travelling at 54 km/h, crosses a platform in 42 seconds. What is the length of the platform?

The ratio of present ages of Anil and Aakash is 4 : 5. Three years later their ages will be in ratio 7 : 8. What is the present age (in years) of Anil?

The reciprocal of the sum of the reciprocals of 3/8 and 8/11 is:

What is the value of [sin (90– 10θ) – cos (p – 6θ)]/ [cos (p/2 – 10θ) – sin (p – 6θ)]?

46% of 250 is equal to

At a telephone exchange, three phones ring at intervals of 20 sec, 24 sec and 30 seconds. If they ring together at 11 : 25 a.m, when will they next ring together?