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Table - Units of a product sold by four shops over three months. P: Jan 120, Feb 150, Mar 180. Q: Jan 200, Feb 160, Mar 140. R: Jan 100, Feb 140, Mar 130. S: Jan 180, Feb 150, Mar 210. By what percent did the total sales of all four shops in March exceed their total sales in January? (answer in %)

Competition practiceData Interpretation
  • A8
  • B15
  • C10
  • D12

Step-by-Step Solution

January total = 120 + 200 + 100 + 180 = 600. March total = 180 + 140 + 130 + 210 = 660. Increase = 60, so %.
Answer: C) 10

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