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Mathematics 21 Online
OpenStudy (anonymous):

Check my answers for these word problems? 1. A car uses 15 gallons of gas to go 330 miles. How much will the car need to go 450 miles? my answer: 30 2. A Play Station 3 game is originally priced for $50.00. The game is now on sale for 20% off. What is the sale price? my answer: $40 3. What is the length of the diagonal of a rectangle with width 8 cm and length 6 cm? my answer: 10 cm Thanks for checking! :)

OpenStudy (aivantettet26):

1. 15 gallons = 330 miles

OpenStudy (mathstudent55):

The first one is wrong. The other two are correct.

OpenStudy (aivantettet26):

how many miles per gallon? 330 / 15 = 22

OpenStudy (aivantettet26):

450 - 330 = 120

OpenStudy (aivantettet26):

120 / 22

OpenStudy (aivantettet26):

is equal to 60/11 or 5.45 gal

OpenStudy (aivantettet26):

do you get it? :) I can give an explanation if you want

OpenStudy (anonymous):

thank you I guess i just didn't know how to do it xD you don't need to give an explanation, i get it :)

OpenStudy (aivantettet26):

okay! glad I could help!

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