Quantitative Aptitude - Arithmetic Ability Questions

A boy crosses a 300 metres wide road in 30 seconds. What is his speed (in km/hr)?

An object travels 24 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by

In the following question, select the missing number from the given series.34, 69, 140, 283, ?, 1145

The average monthly salary of 19 members of a group is Rs. 16000. If one more members whose monthly salary is Rs. 20000 has joined the group, then the average salary of the group is

Four numbers, when arranged in ascending order, are w, x, y and z. The average of the smallest three numbers is 18, while the average of the largest three was 22. What is the range of the data?

ΔXYZ is similar to ΔPQR. If ratio of Perimeter of ΔXYZ and Perimeter of ΔPQR is 16:9 and PQ = 3.6 cm, then what is the length(in cm) of XY?

An equilateral triangle of area 300 cm2 is cut from its three vertices to form a regular hexagon. Area of hexagon is what percent of the area of triangle?