Quantitative Aptitude - Arithmetic Ability Questions

A person bought an item for Rs. 1500 and sold it at a profit of 12%. What was the selling price of the item?

The effective annual rate of interest corresponding to a nominal rate of 7% per annum payable half­yearly is

The average of three numbers is 6. The average of the first two is 5 while the average of the last two is 8. The three numbers are:

In the following question, select the missing number from the given series.
 
1912, 2012, 2133, 2277, 2446, ?

If 1+y16-74, then the value of 5y-15

If cosec∅+sin∅cosec∅-sin∅=53 then the value of sin∅is equal to

If (secA - tanA)2 = x, then the value of x is

A train runs at 80 kmph for the first 40 km and the next 30 km at 60 kmph. Find the average speed.