Amanda and Alexis live 4 miles apart. They decide to start walking toward each other’s houses at the same time. Amanda walks at a rate of 3.5 miles per hour and Alexis walks at a rate of 4 miles per hour. How long will it take for them to meet? Round to the nearest hundredth of an hour. [Remember: D = (r)(t)]

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symoineward247 symoineward247

24-08-2016
Mathematics

contestada

Amanda and Alexis live 4 miles apart. They decide to start walking toward each other’s houses at the same time. Amanda walks at a rate of 3.5 miles per hour and Alexis walks at a rate of 4 miles per hour. How long will it take for them to meet? Round to the nearest hundredth of an hour. [Remember: D = (r)(t)]

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AL2006 AL2006 · Answer 1 · 2016-08-24T16:31:11+02:00

-- Amanda walks at the rate of 3.5 mph .
-- Alexis walks at the rate of 4 mph .
-- The space between them closes at the rate of (3.5 + 4) = 7.5 mph .

They'll meet when the space between them becomes zero.

   D = (r) (t) .

   4 miles = (7.5 mi/hr) (t)

Divide each side
by 7.5 mph : 4 mi / 7.5 mph = t

   t = (4/7.5) hour = 0.53 hour

   = 32 minutes

girlwonder326 girlwonder326 · Answer 2 · 2020-11-13T13:53:53+01:00

girlwonder326 girlwonder326

13-11-2020

Answer:

The answer is 0.53 hour

Explanation:

I did the lesson on edge

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