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10th Board Practice (Section D)

Problem

A passenger was charged 2,250 for a cart ride. The cart owner charges 500 for the 1st hour. For every other hour, he charges 50 less than the previous hour.
Find the number of hours for which the passenger rode the cart.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
hours