A test worth a total of 100 points contains multiple choice questions worth 3 points each and essay questions worth 11 points ea
2 answers:
Answer:
Test contains 15 multiple choice and 5 essay .
Option (B) is correct .
Step-by-step explanation:
Let us assume that the multiple choice questions be x.
Let us assume that the essay questions be y.
As given
A test worth a total of 100 points contains multiple choice questions worth 3 points each and essay questions worth 11 points each.
Than the equations becomes
3x + 11y = 100
There are 20 questions on the test.
Than the equations becomes
x + y = 20
The two equations are
3x + 11y = 100 and x + y = 20
Multiply x + y = 20 by 3 and subtracted from 3x + 11y = 100
3x - 3x + 11y - 3y = 100 - 60
8y = 40
y = 5
put in the equation x + y = 20
x + 5 = 20
x = 20 - 5
x = 15
Therefore test contains 15 multiple choice and 5 essay .
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Hi there!
First we need to work out the parenthesis, which can for instance be done using rainbow technique.
Now subtract 3 from both sides.
And finally add 3x to both sides.
The 4th answer choice is correct.
First we need to work out the parenthesis, which can for instance be done using rainbow technique.
Now subtract 3 from both sides.
And finally add 3x to both sides.
The 4th answer choice is correct.