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Testing cost distribution

publish date: 2026/05/27 12:13:35.857947 UTC

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Testing is a major part of software engineering because it ensures the system behaves correctly and safely.

What percentage of software costs are typically testing costs?

Correct Answer

40%

Explanation

Testing often accounts for around 40% of total project cost, reflecting the importance of verifying system correctness and reliability.

Reference

Software Engineering, Ian Sommerville, 9th edition

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