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Your teacher is giving you a test worth 100 points containing 40 questions. There are two point questions and four point questions on the test. How many of each type of question is on the test.

 Jan 9, 2017
 #1
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x = 2 pointers    then  40-x  = 4 pointers

x(2) + (40 -x)(4) = 100

2x +160 - 4x = 100

-2x = -60

x = 30      two-pointers         40 -x = 40 - 30 = 10 four pointers

 Jan 10, 2017

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