Estimated amount that Mr. Jones thought would be spending each week for grocery = $120 Amount actually spent by Mr.Jones in the grocery store = $94 Error in calculation of the amount of spending = (120 - 94) dollars = $26 Percentage error in calculation = (26/120) * 100 = (13/6) * 10 = 130/6 = 21.666 percent = 21.67 percent So there is 21.67% error in the calculation of Mr. Jones. I hope you got the answer you were looking for.
