Respuesta :

Answer:

she is faster

Step-by-step explanation:

first find how long sister takes to walk 1 mile - if she walks 2 miles in 1 hour she'll take less time to walk 1 mile, 2/2 = 1 mile

and 60mins/2 = 30mins

so sister walks 1 mile in 30 minutes and she walks 1 mile in 20 mins so she is faster by 10 mins

hope this helps :)

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