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  1. Home
  2. 12th grade
  3. Algebra I
  4. Exercise : Find a value after a certain percent of change

Find a value after a certain percent of change Algebra I

The price of a barrel of oil was $40.45 last month. The price has increased by 15%.

How much is a barrel of oil today, rounded to 10^{-2} ?

A car is traveling 60mph and it slows down 20%.

What is the current speed?

Tesla model S can travel 300 miles on a full charge. Due to new efficiencies they found a way to add 12% more range to the model S.

What is the new range of the Tesla model S?

A plane cruises at 10,000 ft and drops its elevation by 20%.

What is the new elevation of the plane?

A train is moving 80mph.

The speed increases by 25%, what is the new speed?

The population of the world was 6 billion in 2000. The population has increased by 27%. What is the current world population?

The price of caviar was $70.15 last month. The price has increased by 20% .

How much is caviar today, rounded to 10^{-2} ?

See also
  • Course : Manipulating quantities
  • Exercise : Determine if two ratios are equivalent
  • Exercise : Find a unit rate
  • Exercise : Find a unit price
  • Exercise : Find a percent of change
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