18. A machine depreciates by 40% in the first year, by 25% in the second year and by 10% per annum for the next three years, each percentage being calculated on the diminishing value. What is the...

Extracted text: 18. A machine depreciates by 40% in the first year, by 25% in the second year and by 10% per annum for the next three years, each percentage being calculated on the diminishing value. What is the average percentage of depreciation for the entire period ?


Extracted text: For certain table which has only been partly reproduced, mean was found to be 1.46. No. of Accidents Frequency 1 2 3 4 46 ? ? 25 10 5 N =200 Calculate missing frequencies.