A man walks 30 minutes at an average speed of 3 miles/hour. He waits 10 minutes for a bus, which bring him back to his starting point at 3:15. If he began his walk at 2:25 the same afternoon, find the average speed of the bus?

Coffee A costs 75 cents per pound. It is mixed with Coffee B, which normally costs 80 cents per pound, to form...

Murad bought equal numbers of 20-paisa and 30-paisa stamps. If the total cost of the stamps was Tk. 10.00, Wha...

The difference between two positive numbers is 16. If the smaller of these two numbers is 3/5 of the larger, w...

What is the minimum number of apples that must be added to the existing stock of 264 apples so that the total...

Four partners distribute their income amongst themselves in the proportions 1:2:3:4. What percent of the incom...

An employer pays 3 workers X, Y and Z a total of Tk. 610 a week. X is paid 125% of the amount Y is paid and 80...