Find the percent of change or the final amount after the given percent of change. Round answers to the nearest tenth, if necessary.

1. 50 is decreased to 19 ________________

2.  25 is increased by 80% _______________

3.  40 is decreased to 33 ________________

4.  75 is increased to 200 ________________

5.  $80 is increased by 125% ______________

6.  $14.40 is decreased by 20% _________

7.  11 is decreased by 10% _______________

8.  5.7 is increased to 7.8 ________________

9.  42.6 is increased to 71.2 ______________

10.  98 is increased by 85% _______________

11.  145 is decreased to 105 _______________

12.  79 is increased to 133 ________________

13.  40 is increased by 12.5% ______________

14.  119 is increased to 277 _______________

15.  537 is decreased to 289 _______________

16.  54 is decreased by 75% ______________

17.  The school bought 6 new computers for the computer lab. Each computer has a retail price of $979. The school received a discount of 12% on each computer. Find the amount of the discount and the final price for all 6 computers.

_____________________________________________________________________________________

18.  Ali paid $85 for an antique clock several years ago. She recently found that it had increased in value to 165% of the original price. What is the present value of the clock?

_____________________________________________________________________________________

19.  In 1950, there were 40.3 million cars registered in the United States. In 1990, there were 133.7 million cars registered in the United States. What was the percent increase of registered cars from 1950 to 1990?

_____________________________________________________________________________________

 

(source)