Idaho Society of Professional Engineers PO Box 170239, Boise, ID 83717-0239 208-426-0636 Fax: 208-426-0639 E-Mail: ispe@idahospe.org |
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Idaho Society of Professional Engineers
• September 18, 2008 – ISPE Southwest Chapter Monthly Meeting – 12:00 Noon – Washington Group International – Training Room • September 20, 2007 - ISPE Northern Chapter Monthly Meeting - Breakfast Nook, Coeur d'Alene • October 4, 2007 – ACEC Trap and Skeet Shoot – 1:00 – 5:00 pm – Boise Gun Club • October 26, 2007 - PE and PS Examinations Boise, Idaho • October 27, 2007 - FS (aka LSIT) Examination Boise, Idaho, Pocatello, Idaho, Moscow, Idaho • October 27, 2007 - FE (aka EIT) Examinations Boise, Idaho, Pocatello, Idaho, Moscow, Idaho • February 17 – 23, 2008 –
National Engineers Week
We recognize that searching for employment opportunities within our specialized
niche can be time consuming and frustrating. In providing this
Career Center
for our users we are streamlining the process by focusing on our specific
industry and offering jobs targeted to our members. The Career Center is easy to use and unique in its ability to
Your new
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Employers: This new Career Center is an ideal place to begin searching for your next employee.
ISPE SINCERELY APPRECIATES THE SUPPORT OF OUR
CURRENT
SUSTAINING ORGANIZATIONS:
ACEC TRAP AND SKEET SHOOT
MATHCOUNTS PROBLEM OF THE WEEK
School Supplies
Item Regular Price
You find out that School Supply Super Store has all writing utensils (pencils, pens, colored pencils, markers, highlighters) on sale for 30% off and Supply Central has paper products (loose leaf, graphing, index cards, notebooks), binders, and folders on sale for 20% off. If all of the other items are regular price (listed above) and you can make only one stop, which store should you stop at to get your supplies for the lowest total price? -------------------------------------------------------------------------------- While shopping you decide to stop at both School Supply Super Store and Supply Central and only purchase the items from your list that are on sale at each store. Compared to the regular prices, what is the average percent savings per item? Express as a percent to the nearest tenth. -------------------------------------------------------------------------------- After selecting all of the sale items at School Supply Super Store that are on your list you go to pay. The cashier tells you that your total is $8.74. How much is sales tax? Express your answer as a percent to the nearest tenth. -------------------------------------------------------------------------------- Assuming that the tax rate is the same at both School Supply Super Store and Supply Central, what will your total, with tax, be at Supply Central when you purchase their sale items that are on your list?
Answer to last week’s MATHCOUNTS problem: For this question you’ll need to use the equation Rate = distance ÷ time
In order to find the average speed for the entire trip, you’ll need to first calculate the total distance and the total time it took to get there.
TOTAL DISTANCE: 106 miles + 174 miles = 280miles
TOTAL TIME: DC to Richmond: r = d ÷ t 58mph = 106 ÷ x x = 106/58, or approximately 1.8276 hours
Richmond to Duck: 3 hours and 12 minutes… divide the 12 minutes by 60 and add it to 3 (hours) to calculate the time in hours. 3 + (12 ÷ 60) = 3.2
Total time = 5.0276 hours
Now we divide the total distance by the total time: 280 ÷ 5.0276 = 55.7mph (rounded to the nearest tenth) -------------------------------------------------------------------------------- First determine how much time they have left to get from Williamsburg to DC if they were to tie their time from the trip down.
Time from Duck to Williamsburg: 126 ÷ 54 = 2.3333 hours Now subtract that from the time it took them to get from DC to Duck: 5.0276 - 2.3333 = 2.6943 hours remaining
Divide the total distance left by the “time remaining” 153/2.6943 = 57 mph (to the nearest whole number) -------------------------------------------------------------------------------- First find the actual amount of increase required: Speed of second portion of the trip – speed of the first portion of the trip 57 mph – 54 mph = 3 mph
Then divide it by the speed from the first portion of the trip (and multiply by 100 to make it a percentage): 3mph ÷ 54mph ×100 = 5.6%
If you want to see last week's
problem again, click
http://www.mathcounts.org/webarticles/anmviewer.asp?a=1084&z=110
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National Engineers Week - Future City Competition
Board of Professional Engineers and Professional Land Surveyors
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