A company manufactured two items last week: 101 engines and 92 lawn mowers. It was discovered that 19 engines and 4 lawn mowers were defective. Of the engines that were not defective, 39 were of the highest quality, and 43 were not of the highest quality. Of the lawn mowers that were not defective, 51 were of the highest quality, and 37 were not of the highest quality. (a) What fractional part of all items manufactured was of the highest quality? (b) What fractional part of all items manufactured was defective? 90 (a) 193 of all items manufactured were of the highest quality. (Type a whole number or a fraction. Do not simplify.) (b) of all items manufactured were defective