SOLUTION: Joseph is traveling on a road trip. The distance in miles, d, he travels before stopping for lunch varies directly with the speed in mph, v, he travels. He travels 100 miles at a s

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Question 1139735: Joseph is traveling on a road trip. The distance in miles, d, he travels before stopping for lunch varies directly with the speed in mph, v, he travels. He travels 100 miles at a speed of 50 mph.
(a) Write the equation that relates d and v.
(b) How far would he travel (in miles) before stopping for lunch at a rate of 55 mph?

Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
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The distance in miles, d, he travels before stopping for lunch varies directly with the speed in mph, v, he travels. He travels 100 miles at a speed of 50 mph.
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d=kv
k=d%2Fv
k=100%2F50
k=2

highlight%28d=2v%29
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If he goes at 55 mph, then distance he goes before stopping for lunch is d=2%2A55=highlight_green%28110%29 miles.