Friday, January 25, 2013

Considering the following problem, how far should the end of the ramp be from the base of the building?Problem: You are in charge of building a...

For every 1 inch rise the ramp must extend 12
inches.


Therefor:


For a rise
of n inches the ramp must extend by n*12 inches.


The
required rise = n = 18
inches.


Therefore:


The
required length of ramp = 18*12 = 216 inches


This is
equivalent to 216/12 = 18
feet.


Answer:


Distance of end
of ramp from building = 18 feet.


An alternative, quicker
way to solve this problem is as follows:


As the ramp must
extend 1 foot (12 inches) for every 1 inch rise, the ramp must extend by 18 feet for 18
inches rise.

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