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April can bicycle 52 miles in the same time as it takes her to walk 12 miles. she can ride 10 mph faster than she can walk. how fast can she walk?

Respuesta :

sqdancefan
Let w represent April's walking speed.
  time = distance/speed
  52/(w+10) = 12/w

  52w = 12w + 120 . . . . . . multiply by w(w+10)
  40w = 120
  w = 120/40 = 3

April can walk 3 mph.

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