jxaleat jxaleat

11-05-2017
Mathematics

contestada

a test is worth 50 points.multiple choice questions are worth 1 point, and short answer questions are 3 points. If the test has 20 questions, how many multiple choise questions are there?

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soles1234 soles1234

11-05-2017

is there any options.

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amandabmartin amandabmartin

11-05-2017

x = # of MC, y = # of SA

x + y = 20
x + 3y = 50

Solve the system of equations and you'll have y = 15, x = 5

So 5 MC questions

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