Distance traveled varies jointly as rate and time. If Fred travels 135 miles in 3 hours at a rate of 45 mi/hr, find the rate at

Question

3 years ago

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Distance traveled varies jointly as rate and time. If Fred travels 135 miles in 3 hours at a rate of 45 mi/hr, find the rate at

which he travels to cover a distance of 189 miles in 3.5 hours. Can someone kind of lay out what I should plug in to solve this?

Mathematics

1 answer:

Rudiy27 · Answer 1 · 2022-04-21T04:23:54+03:00

From the relation, d is joint proportionaly with r and t.
Thus,d = krt.

Using the first set of given, we could calculate for k.135 = k(45)(3)k = 1

Using the computed value of k.d = krtr = d/ktr = (189)/(1)(3.5) = 54 mph.

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