Quantitative Aptitude - Arithmetic Ability Questions

If the time increases by 7 years, then simple interest increases by Rs 8400 on a sum of Rs 6000. What is the rate (in percentage) of interest per annum?

A missile travels at 1260 km/h. How many metres does it travel in one second?

How many three digit numbers are there in which all the digits are odd?

To cover a distance of 333 km in 2 hours by a car, what should be the average speed of the car (in meter/second)?

X does 25% of a work in 20 days. Y joins X and they together finish the remaining work in 15 days. Y alone can do the whole work in ___ days.

Two labourers A and B are paid a total of Rs 650 per day. If A is paid 160 percent of what is paid to B, how much (in Rs) is B paid?

Sum of two numbers is thrice their difference. Their ratio is

After allowing a discount of 20% on Marked price Kishore makes a profit of 12%. What percentage is the Marked price above the Cost price?