1. In the news last week a guy from Williston purchased face masks for $0.10 a piece. He tried to sell them to local hospitals for $2.50. Calculate the percent change and describe it.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question
1. In the news last week a guy from Williston purchased face masks for $0.10 a piece. He tried to
sell them to local hospitals for $2.50. Calculate the percent change and describe it.
2. In the 2008 recession house values dropped drastically. A house was assessed for $299,00 and
then after the recession that same house was assessed for $265,00. Calculate the percent
change and describe it.
3. A clothing store says they are having 25% off sale with an additional 25% off any blue stickered
garments. They claim you are saving 50%. However, when you buy a new coat originally marked
$125 the sale price comes up $70.31. You argue that you are being overcharged. What was your
actual percent savings? Explain the retailer's mistake.
4. How much pure alcohol is in 150 liters of a 30% alcohol solution?
5. Alcohol mixture: In a chemistry class, 12 liters of a 12% alcohol solution must be mixed with a
20% solution to get a 14% solution. How many liters of the 20% solution are needed?
Transcribed Image Text:1. In the news last week a guy from Williston purchased face masks for $0.10 a piece. He tried to sell them to local hospitals for $2.50. Calculate the percent change and describe it. 2. In the 2008 recession house values dropped drastically. A house was assessed for $299,00 and then after the recession that same house was assessed for $265,00. Calculate the percent change and describe it. 3. A clothing store says they are having 25% off sale with an additional 25% off any blue stickered garments. They claim you are saving 50%. However, when you buy a new coat originally marked $125 the sale price comes up $70.31. You argue that you are being overcharged. What was your actual percent savings? Explain the retailer's mistake. 4. How much pure alcohol is in 150 liters of a 30% alcohol solution? 5. Alcohol mixture: In a chemistry class, 12 liters of a 12% alcohol solution must be mixed with a 20% solution to get a 14% solution. How many liters of the 20% solution are needed?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 4 images

Blurred answer
Similar questions
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,