4.7ACC Practice HW : Specific Types of Percent Problems

Name ______Date ______4.7ACC practice HW: Specific types of percent problems

1) A population of squirrels rose from 338 2) The heart rate of a grizzly bear slows to 520 over a period of 3 years. What is from 50 to 8 beats per minute during the percent increase, to the nearest hibernation. What is the percent tenth of a percent? decrease?

3) The sale price of a pair of jeans was 4) The bike shop purchased mountain bikes $29.95. The original price was $40. at the wholesale price of $434.69 each What was the percent markdown to the and sold them at the retail price of nearest percent? $630.30 each. What was the percent of increase to the nearest percent?

5) Jesse made ceramic figurines for a fair. 6) Sarah invests in stocks. Unfortunately, The materials for each figurine cost she made some poor decisions last year, $10.25. He sold them for $14.35. What and the value of her stock portfolio fell was the percent markup to the nearest from $24,638 to $13,874. What was the percent? percent decrease to the nearest percent?

7) Tynisha cut strips of ribbon for a craft 8) Jackie ordered 12 ounces of chees. She project. She needed each ribbon to be 5 received 2 more ounces than she needed. inches long. The ribbon she cut was What was the percent error? inches. What was the percent error?

9) Mario is cutting some boards to replace on his deck. The boards are supposed to be 12 feet in length. He discovers that one of the boards has a 2% error in that it is 2% too short. How many inches too short is the board?

10)Aubrey and David were estimating the value of two different houses. Aubrey estimated a $400,000 house to be $410,000. David estimated a $410,000 house to be $400,000. a) Hypotheize first: Is Aubrey’s and David’s percent error the same or different? Explain why.

b) Now find the percent error for both

c) Re-answer question a. Why did this happen?

11) Uri was comparing the hourly salaries for 2 different jobs. He estimated the salary for the first job to be $12/hour; it was actually $10/hour. He estimated the salary of the second job to be $46/hour; it was actually $50/hour. For which job is there a greater percent error? Explain why.

12)A person earns a 12% commission on sales. 13)A person sold $900 in merchandise and Find the amount this person earns on earned $135 in commission. What is her $1500 in sales. rate of commission?

14)Juliet sold a house for $325,000. What is 15)Jason sells building supplies and earns a her commission if she earns a 5% commission on his sales. Last week, he commission? sold $3,735 worth of building supplies. What percent commission did he receive if he earned $672.30?

$1200 for 2 years at 3% per year $5,000 for 6 months at 3% per year Find amount of interest. Find amount of interest

$3000 for 1½ years at 5% per year $2,000 for 4 years at 1% per 6 months Find total amount in account. Find total amount in account