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March 4, 2015

March 4, 2015

Posted by **Linda** on Wednesday, October 5, 2011 at 11:37am.

Is the answer 22????

- Algebra word problem -
**Steve**, Wednesday, October 5, 2011 at 12:00pmscore = 10*right - 4*wrong

s = 100 + 10r - 4w

r+w = 50

so, to get at least 350,

100 + 10r - 4(50-r) > 350

100 + 10r - 200 + 4r > 350

14r > 450

r > 32.14

so, at least 33 correct answers

100 + 32*10 - 18*4 = 348

100 + 33*10 - 17*4 = 362

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