Discover a wealth of knowledge and get your questions answered at IDNLearn.com. Our platform provides accurate, detailed responses to help you navigate any topic with ease.

Next week your math teacher is giving a chapter test. The test will consist of 35 questions. some problems r worth 2 point and some r worth 4 points. there are 20 questions worth 2 points. how many problems are worth 4 points. solve by substitution

Sagot :

There are 35 total questions. You already know that 20 of the questions are worth 2 points. You subtract 20 from 35. 35-20=15. So 15 questions are worth 4 points.
Total questions~35. Worth 2 points~20. Worth 4 points~15.

20 questions are worth 2 points and 15 questions are worth 4 points.

Let x represent the number of problems worth 2 points and y represent the number of problems worth 4 points.

The test will consist of 35 questions. Hence:

x + y = 35     (1)

There are 20 questions worth 2 points, hence x = 20:

x + y = 35

20 + y = 35

y = 15

Therefore 20 questions are worth 2 points and 15 questions are worth 4 points.

Find out more at: https://brainly.com/question/21105092