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Problem

Two cities are building bicycle paths.
  • Charles City has built 5, space, k, m of bicycle paths by the end of the first month, and the total length of the paths doubles each month.
  • Tinsel Town has built 21, space, k, m of bicycle paths by the end of the first month, and the total length of the paths increases by 5, space, k, m per month.
In which month will the total length of the bicycle paths in Charles City first exceed the length in Tinsel Town?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i
Do 4 problems