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Keith worked for 1212 hours each day for 88 days. Then the next day he worked 99 hours. How many hours did Keith work in all?

Full solution

Q. Keith worked for 1212 hours each day for 88 days. Then the next day he worked 99 hours. How many hours did Keith work in all?
  1. Calculate total hours worked: Calculate the total hours worked for the first 88 days.\newlineKeith worked 1212 hours each day for 88 days.\newlineTotal hours for 88 days = 1212 hours/day ×\times 88 days = 9696 hours.
  2. Add hours on ninth day: Add the hours worked on the ninth day.\newlineOn the ninth day, Keith worked 99 hours.\newlineTotal hours for 99 days = Total hours for 88 days + Hours worked on ninth day.\newlineTotal hours for 99 days = 9696 hours + 99 hours = 105105 hours.