Quantitative Aptitude - Arithmetic Ability Questions

The sum of 5/8 and 8/5 is

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?

The total surface area of a cube is 181.5 cm². Find its side (in cm).

What smallest number should be added to the sum of squares of 15 and 14, so that the resulting number is a perfect square?

The product of two numbers is 0.324. One of the numbers is 1.2. What is the other number?

Which of the following is the least of all?

ABCD is a cyclic trapezium in which AD || BC. If ∠ABC = 70°, then ∠BCD is

If the circum radius of the equilateral triangle is 12 cm then what is the value of in radius (in cm) of the triangle?