第 1 题
1 分A pair of shoes is sold for \( \$450 \) at a profit of \( 25\% \). Find the cost price of the shoes.
Key Stage 3 (KS3) · Mathematics
Percentage Change and Simple Interest：练习题
2 道选择题即时批改，另有 4 道文字题附完整解题步骤，全部围绕「Percentage Change and Simple Interest」。
6 道题目15 分免费，无需注册
第 2 题
1 分The number of members in a sports club increased from 80 to 116. Find the percentage increase.
第 3 题
2 分The population of a small town decreased from \( 2500 \) to \( 2300 \). Find the percentage decrease in the population.
先自己写一遍答案，再对照解题步骤。
第 4 题
4 分A salary of \( \$20,000 \) is increased by \( 10\% \) in the first year and then decreased by \( 10\% \) in the second year. What is the final salary?
先自己写一遍答案，再对照解题步骤。
第 5 题
3 分A shop sells a toy for \( \$120 \) after a \( 20\% \) discount. What was the original price of the toy?
先自己写一遍答案，再对照解题步骤。
第 6 题
4 分A worker's monthly salary was increased by \(10\%\) to \$19,800.
(a) Find the worker's original salary.
(b) If the original salary is now decreased by \(10\%\) instead of increased, what would the new salary be?
先自己写一遍答案，再对照解题步骤。
* thinka提供的内容由AI生成，可能并非总是准确或最新。请将其用作辅助资源，并与官方材料进行核实。
想多做几道同类题目？立即开始练习这个课题，边做边批改。
立即练习