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3 years ago

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An exam worth 145 points contains 50 questions. The number of two-point questions is equal to 50 minus the number of five-point

questions. Some of the questions are worth two points and some are worth five points. How many two-point questions are on the test? How many five-point questions are on the test?

2 answers:

abruzzese [7]3 years ago

3 0

Answer:

Therefore there are 35 number of 2-point questions and 15 number of 5-point questions.

Step-by-step explanation:

i) let the number of 2 point question is x.

ii) let the number of 5 point questions be y

iii) total number of questions is 50

iv) therefore x + y = 50

v) it is also given that 2x + 5y = 145

vi) solving for the two equations found in iv) and v). Multiplying iv) by 2 we get

2x + 2y = 100

vii) subtracting equation vi) from equation v) we get 3y = 45.

viii) Therefore y = 15.

ix) using the value in viii) and substituting in iv) we get x + 15 = 50.

Therefore x = 50 - 15 = 35

x) Therefore there are 35 number of 2-point questions and 15 number of 5-point questions.

Katyanochek1 [597]3 years ago

3 0

Answer:

Therefore there are 35 number of 2-point questions and 15 number of 5-point questions.

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