Numerical Appli...

Vasu can run $$4$$ Km in $$48$$ minutes. If Vikas can run twice as fast as Vasu, how many minutes does it take Vikas to run $$6$$ Km?

A single frame of $$35$$ mm film is about three-quarters of an inch long. A film reel holds up to $$1000$$ feet of film. Find the number of reels required for a $$2:47:00$$ ($$2$$ hr $$47$$ min) film shot at $$24$$ frames per second.

A water tank has two pipes to fill it. Pipe A can fill the tank in $$2$$ hours , only if tank is empty. Pipe B can empty the tank in $$3$$ hours, only if tank is full. If both the pipes start at the same time when the task is empty, calculate the number of hours will it take for the tank to be filled to $$60\%$$ of its capacity?

The size of song downloaded from internet is $$4$$ megabytes. Edwird downloads music at a rate of $$256$$ kilo bytes per second.how many songs can Edwird download in $$2$$ hours? (1 Megabytes =1024 kilobytes).

A coastal geologist estimates that a certain countrys beaches are eroding at a rate of  $$1.5$$ feet per year. 

Working for $$10$$ months as a teacher in High School, David earned $$\$3,200$$ per month from September to June. He then undertook a job as a barista at a cafe, where he earned $$\$2,000$$ per month during July and August. Find the average monthly pay of David for the $$12$$ months.

Jennilina's hobby is to paint the rooms at her college. At top speed, she could paint $$5$$ identical rooms during one $$6$$-hour shift. Find the time it took her to paint each room.

The value of $$\dfrac {(n + 2)! - (n + 1)!}{n!} $$ is:

The diagram shows a right pyramid that has an isosceles triangular base. If the volume of the pyramid is $$330$$ cm$$^3$$, calculate its height, h.

The pyramid in Figure 3 is composed of a square base of area $$16$$ and four isosceles triangles, in which each base angle measures $$60^o$$. Calculate the volume of the pyramid.