Quantitative Aptitude - Arithmetic Ability Questions

Ms. Alina borrowed Rs.650 at 6% per annum simple interest. What amount will she pay to clear her debt after 4 years?

The average revenues of 7 consecutive years of a company is Rs 83 lakhs. If the average of first 4 years is Rs 78 lakhs and that of last 4 years is Rs 90 lakhs, find the revenue for the 4th year.

Present age of R and S are in the ratio of 3 : 2 respectively. If the present age of H is 117 years and R’s present age is 4/13 of H’s present age, then after how many years the ages of R and S would be in the ratio of 15 : 11?

If the length of the shadow of a vertical pole be √3 times the height of the pole, the angle of elevation of the sun is:­

Three runners A,B and C run a race, with runner A finishing 12 meters ahead of runner B and 18 meters ahead of runner C, while runner B finishes 8 meters ahead of runner C. Each runner travels the entire distance at a constant speed. The length of the race is

The variance of a set of data is 121. Then the standard deviation of the data is

What is the perimeter of the sector whose central angle is 60° and radius of the circle is 21 cm?

Find the value of 'a' for which x+3x+a24 is a perfect square.