Quantitative Aptitude - Arithmetic Ability Questions

Ramu can row 9 kmph in still water. It takes him twice as long to row up as to row down. Find the rate of stream.

Two circles are having radii 9 cm and 12 cm. The distance between their centres is 15 cm. What is the length (in cm) of their common chord?

The total surface area of a hemisphere is 166.32 sq cm, find its radius?

BE and CF are two altitudes of a triangle ABC. If AB = 6 cm , AC = 5 cm and CF = 4 cm , then the length of BE is

A batsman in his 12th innings makes a score of 120, and thereby increase his average by 5. The average score after 12th innings is

The sum of two angles of a triangle is 116o and their difference is 24o . The measure of smallest angle of the triangle is

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?

What is the value of tan 6° tan 36° tan 84° tan 54° tan 45°?