note the equation/formula: ____________________________
d * r = t ; _____________________________ in which: _____________________________ d = distance = 84 ft. r = rate = 12 ft / sec t = time = ? _______________________________ To find the "time" we can rearrange the equation: _______________________________________ d = r * t ; _______________________________________ Divide EACH SIDE of the equation by "r" ; to isolation "t" on one side of the equation; to create an expression to find the time for the given distance and rate; which we will then do by plugging in our given values for "d" (distance) and "r" (rate) ; _______________________________________ d / r = (r * t) / r ; _________________________ to get : d / r = t ; _________________________ ↔ t = d / r ; _________________________ Now, plug in our given values for "d" and "r" ; to solve for "t" ; ______________________________________________________ → t = 84 ft / (12 ft / sec) ;
