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Amanda and Alexis live 4 miles apart. They decide to start walking toward each otherā€™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)]

Respuesta :

Charmber06

Answer:

0.53 hours

Step-by-step explanation:

D = (r)(t), Where

ā€˜Dā€™ is the distance covered

ā€˜rā€™ is the approach rate

ā€˜tā€™ is the total time spent

Distance covered, ā€˜Dā€™ = 4 miles

Approach rate, ā€œrā€ = 3.5mph + 4mph

r = 7.5mph.

t is unknown

Solving for t,

D = (r)(t)

4 = 7.5t

t = 4/7.5

t = 0.53 hours (to the nearest hundredth)

Therefore, it will take Amanda and Alexis 0.53 hours to meet

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