Question

A science test, which is worth 100 points, consists of 24 questions. E

points. If x is the number of 3-point questions and y is the number of
represents this situation.
x + y = 24
3x + 5y = 100
What does the solution of this system indicate about the questions
The test contains 4 three-point questions and 20 five-point ques
The test contains 10 three-point questions and 14 five-point que
The test contains 14 three-point questions and 10 five-point qu-
O The test contains 20 three-point questions and 8 five-point que

Answer 1

B

Explanation:

actually the question is about to solve x and y

x + y = 24, x = 24 - y, put into the other equation

3x + 5y = 100

3(24 - y) + 5y = 100

72 - 3y + 5y = 100

2y = 28

y = 14

x = 24 - 14 = 10

no. of 3 point question = 10, no. of 5 point question = 14