HW #4- Conversions Name: _______________________

1) A student walks to school and knows that she walks at a rate of 3 miles per hour. The conversion below is set up correctly using conversion factors.

a) What are the final units for this conversion?

b) What is her speed in those units?

2) A 5 pound bag of trail mix costs $13.99. a) What is the cost per ounce of trail mix? Use conversion factors to set up your work.

b) "Make your own trail mix" bulk ingredients cost $0.25/oz. How much more would you spend on 5 pounds buying your trail mix this way? Justify your response.

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Solutions

190,080To Tin 31,68inymin

inches per minute

3,168 inlmin

I 1b 1607final unit13.99

ftp.tFz 4go3i9o9 o.ohunper 4oz

final unit

5tboslojz.ly 2o 20uffrj5ahbsomfx

which is 56.011JO 13.99 906.01 MD than the

premadebag

3) A kitchen faucet flows at a rate of 1.5 GPM (gallons per minute). If you want to fill a 20 ounce

water bottle, how many seconds will it take? Show your work.

4) A tomato plant grows approximately 15 cm in two weeks. Over that time, what was the average growth rate in inches per day? Show your work. Round your answer to the nearest hundredth.

5) The rate of water flow at Niagra Falls is 3,160 tons per second. What is the rate in pounds per minute? Show your work using conversion factors.

6) Choose one problem from VN 1.2, CW 1.3, or HW #4 (this homework) to copy as an example on your Unit 1 Reference Sheet (in the Rates & Conversions Example box). Be sure you have checked the answer keys posted online so that your reference sheet is accurate!

final units

95in FEI III EE ITE Finzi90M EEsee

HwiHtake6.25

inperday

III o zi.TT Yaays FssuiEay o 42peirnd

Fm in

sniff tooth YET 37938.980mi

Don't forget this part