An ambulance travels 10 miles at a speed of 75 mi,es per hour. How fast must the ambulance travel on the return trip if the round-trip travel time is to be 20 minutes?

An amount of money was distributed among some people in such a way that it there had been 4 more people, every...

In a survey, it was found that 65% of the people surveyed watched the news on television, 40% read it on newsp...

In a certain country, a person is born every 7 seconds and a person dies in every 13 seconds. Therefore, the b...

If (a+a+a)=(b+b+b+b)and (a+b)=7, then what is the value of (a2-b2)?

Baki lives 2 miles west of Raju's house. Rafiq lives 3 miles north of Raju's house and 2 miles west Diba's hou...

On Tuesday, 30 of the students in a class took a test and their average score was 83.5. On Thursday, the other...