SESK: Stuff Everyone Should Know · sesk.info/asvab-ar-percent-increase
A $40 item rises by 25%. What is the new price?
$50, because 25% of 40 is 10.
- $45
- $50 ✔
- $65
Why: 25% of 40 is 0.25 x 40 = 10. Add the increase: 40 + 10 = 50.
Huh, didn't know that: A 100% increase doubles the original amount.
Why was the equal sign so humble? It never thought it was less than or greater than anyone.
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References
Answer: $50. 25% of 40 is 0.25 x 40 = 10. Add the increase: 40 + 10 = 50.
- OpenStax Prealgebra 2e, 6.2 Solve General Applications of Percent openstax.org/books/prealgebra-2e/pages/6-2-solve-general-applications-of-percent
Then we find what percent the amount of increase is of the original amount.
Checked 2026-10-12.
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