Two buses start from a bus terminal with a speed of 20 km/h at interval of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at interval of 8 minutes?

It takes 5 hours to fill a container using machine A. The same container can be filled using machine B in 10 h...

Melissa is four times as old as Jim. Pat is 5 years older than Melissa. If Jim is y years old, how old is Pat?

The average (arithmetic mean) of x and y is 20. If x = 5 what is the average of x. y and z?

The sum of two integers is 36, and the difference is 6. What is the smaller of the two numbers?

The angle measure of the base angles of an isosceles triangle are represented by x and the vertex angle is 3x...

Wendy has 5 pairs of pants and 8 shirts. How many different combinations can she make with these items?