MATH 110 Sec 8-1: Percent, Taxes & Inflation Practice Exercises

MATH 110 Sec 8-1: Percent, Taxes & InflationPractice Exercises

Write 61% as a decimal.


Write the decimal 7.65 as a percent.


Write as a percent.


What is 20% of 360?


What is 20% of 360?PERCENT x BASE = AMOUNT


40 is what percent of 160?


40 is what percent of 160?

PERCENT x BASE = AMOUNT


44.55 is 24.75% of what number?


44.55 is 24.75% of what number?PERCENT x BASE = AMOUNT


A husband bought a diamond ring for his famous wife for $35,000. Years later, the ring sold at auction for $12,008,400. The auction price was what percent of the original price?


A husband bought a diamond ring for his famous wife for $35,000. Years later, the ring sold at auction for $12,008,400. The auction price was what percent of the original price?



The 2005 sales (in thousands of dollars) of the top 5 products of a company are given in this table.

(a) What percent of the sales of these 5 products was due to product B (to nearest hundredth)?



(a) What percent of the sales of these 5 products was due to product B (to nearest hundredth)?




(b) What percent greater were sales of Product B than Product E (to nearest hundredth)?



(b) What percent greater were sales of Product B than Product E (to nearest hundredth)?𝑷𝑬𝑹𝑪𝑬𝑵𝑻𝑪𝑯𝑨𝑵𝑮𝑬

=𝑵𝑬𝑾 𝒂𝒎𝒕−𝑩𝑨𝑺𝑬 𝒂𝒎𝒕

𝑩𝑨𝑺𝑬 𝒂𝒎𝒕


A company found that in 2009, downloaded music album sales were 524% of what they were in 2005. If 10.9 million albums were downloaded in 2005, how many were downloaded in 2009(rounded to one decimal place)?


A company found that in 2009, downloaded music album sales were 524% of what they were in 2005. If 10.9 million albums were downloaded in 2005, how many were downloaded in 2009(rounded to one decimal place)?



A person earns $25,900 one year and gets a 5% raise in salary. What is the new salary?


A person earns $25,900 one year and gets a 5% raise in salary. What is the new salary?



A mutual fund dropped in value by 30% from last year to this year. If the fund is now worth $10,780, how much was the fund worth

last year?


A mutual fund dropped in value by 30% from last year to this year. If the fund is now worth $10,780, how much was the fund worth

last year?PERCENT x BASE = AMOUNT


A motorcycle manufacturer expects to build 137,000motorcycles this year, up from 126,000 last year.

Find the percent of increase in production (to one decimal place).


A motorcycle manufacturer expects to build 137,000motorcycles this year, up from 126,000 last year.

Find the percent of increase in production (to one decimal place).𝑷𝑬𝑹𝑪𝑬𝑵𝑻𝑪𝑯𝑨𝑵𝑮𝑬

=𝑵𝑬𝑾 𝒂𝒎𝒕−𝑩𝑨𝑺𝑬 𝒂𝒎𝒕

𝑩𝑨𝑺𝑬 𝒂𝒎𝒕


Use the table below to calculate the federal income tax due for a taxable income of $320,000.

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MATH 110 Sec 8-1: Percent, Taxes & Inflation Practice Exercises