Advanced Percentage Problems Quiz

Question 1

A price is increased by $20\%$ and then decreased by $20\%$. What is the overall percent change from the original price?

Accepted Answer

$4\%$ decrease

Answer

$40\%$ decrease

Answer

$4\%$ increase

Answer

$0\%$ (no change)

Question 2

A map scale says $1	ext{ in}=30	ext{ miles}$. Two cities are $4.5$ inches apart on the map. How many miles apart are they in reality?

Accepted Answer

$135	ext{ miles}$

Answer

$15	ext{ miles}$

Answer

$120	ext{ miles}$

Answer

$900	ext{ miles}$

Question 3

A chemical solution should be $30\%$ acid by volume. A technician makes a solution that is $36\%$ acid. What is the percent error relative to the desired concentration?

Accepted Answer

$20\%$

Answer

$120\%$

Answer

$6\%$

Answer

$16.67\%$

Advanced Percentage Problems Quiz

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