Michael J. answered • 04/27/15

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Applying SImple Math to Everyday Life Activities

Let write a proportion that describes this relationship.

r ∝ 1 / t

We can establish an equation using this proportion:

r = K / t

where K is a constant.

Solve for K using the initial values.

K = rt

K = 50 words/min * 80 min

K = 4000 words

Now, solve for t using the value of K when the rate, r, is 40 words/min.

t = K / r

t = (4000 words) / (40 words/min)

t = 160,000 min