Quantitative Aptitude - Arithmetic Ability Questions

The simple and compound interest that can be earned in two years at the same rate is Rs 4000 and Rs 4180 respectively. What is the rate (percent per annum) of interest?

What is the value of (2/√3 +tan45° ) ?

The largest 5 digit number exactly divisible by 89 is:

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is

At 22% discount the selling price of a refrigerator is Rs 26000, what is the selling price if the discount is 40%?

x and y are two numbers such that their mean proportion is 8 and third proportion is 512. What is the value of x and y?

If 1/3(12x/5 - 1/2) + 6/5 = 7/6, then what is the value of x?

What number should be added to each of the numbers 55, 100, 65 and 116, so that the resulting numbers are in continued proportion?