Quantitative Aptitude - Arithmetic Ability Questions

The volume of a hemisphere is 5749.33 cm³. Find its diameter (in cm).

What is the value of 2 consecutive natural numbers, sum of whose squares is 145?

A sum becomes 1.69 times of itself in 2 years when invested at compound interest. What is the per annum rate of interest (in percentage)?

If FRIEND is coded as HUMJTK, how can CANDLE be written in that code?

A boat goes 15 km upstream and 10 1/2 km down stream in 3 hrs 15 min. It goes 12 km upstream and 14 km downstream in 3 hrs. What is the speed of the boat in still water?

An angle is greater than its complementary angle by 40°. Find the measure of the angle?

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

In which of the following quadrilaterals only one pair of opposite angles is supplementary?