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CMA Intermediate · Operations Management and Strategic Management · Control Measures - Time and Motion Study, Method Study, Work Study

A flow process chart of a component records: 6 operations, 3 inspections, 4 transports, 2 delays and 1 storage. What is the total number of recorded activities, and what percentage of them are value-adding operations if only operations are treated as value-adding?

There are 16 recorded activities in total, and 6 of them are operations, so value-adding operations form 37.5% of the chart. This is found by adding all symbols and dividing the operation count by that total.

  1. A16 activities; 37.5%Correct
  2. B16 activities; 31.25%
  3. C15 activities; 40%
  4. D14 activities; 42.86%

Explanation

Total = 6 + 3 + 4 + 2 + 1 = 16. Operations are 6 of 16 = 0.375, i.e. 37.5%. Checking backwards: 37.5% of 16 = 6. The 31.25% option wrongly treats 5 activities as operations, and the 15 and 14 options miscount the total.

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