Mathematics
jae2
30

Your teacher is giving you a test worth 100 points containing 40 questions. there are two-point and four-point questions on the test. let the number of two-point questions be x and the number of four-point questions be y. how many of each type of question are on the test?

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(1) Answers
latinaberryhill

x + y = 40....x = 40 - y 2x + 4y = 100 2(40 - y) + 4y = 100 80 - 2y + 4y = 100 -2y + 4y = 100 - 80 2y = 20 y = 20/2 y = 10 <=== there are 10 four-point q's x + y = 40 x + 10 = 40 x = 40 - 10 x = 30 <=== there are 30 two-point q's

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