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Dynamometer Prices
Dynamometer Prices
I need help wit these math problems?
Twenty four percent of the students voted for Ashley. If she got 720 votes, how many people voted in all?
Physical therapists measure strength on a dynamometer, which uses a unit called a foot-pound. Suppose you increase the strength in your elbow joint from 95 foot-pounds to 125 foot-pounds. Find the percent of increase to the nearest percent.
Over the past few weeks, gas prices went from $2.86 to $3.05. Find this percent change and state whether it is a percent increase or percent decrease.
24% = 0.24
0.24 * x = 720
x = 720 / 0.24 = 3000
Percent increase = 100% * (New – Old) / Old
100% * (125 – 95) / 95
100% * 30 / 95
100% * 0.316
31.6%
You can use the same method to answer the third one.
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