Algebra, NAP_70032

Question

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Worked Solution

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Variant 0

DifficultyLevel

530

Question

If the average of 4, 10, 20 and n\large n is 19, then 4 + 10 + 20 + n\large n = ?

Worked Solution

If the average of 4, 10, 20 and n\large n is 19 then
4+10+20+n4\dfrac{4 + 10 + 20 + \large n }{4} = 19
4 + 10 + 20 + n\large n = 19 ×\times 4


∴\therefore 4 + 10 + 20 + n\large n = 76

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
If the average of 4, 10, 20 and $\large n$ is 19, then 4 + 10 + 20 + $\large n$ = ?
workedSolution
If the average of 4, 10, 20 and $\large n$ is 19 then
>>||| |-|-| |$\dfrac{4 + 10 + 20 + \large n }{4}$|= 19| |4 + 10 + 20 + $\large n$|= 19 $\times$ 4|
>>
$\therefore$ 4 + 10 + 20 + $\large n$ = {{{correctAnswer}}}
correctAnswer
76

Answers

Is Correct?Answer
x

19

x

39

x

42

✓

76

Variant 1

DifficultyLevel

532

Question

If the average of 7, 11, 18 and w\large w is 17, then 7 + 11 + 18 + w\large w = ?

Worked Solution

If the average of 7, 11, 18 and w\large w is 17 then
7+11+18+w4\dfrac{7 + 11 + 18 + \large w}{4} = 17
7 + 11 + 18 + w\large w = 17 ×\times 4


∴\therefore 7 + 11 + 18 + w\large w = 68

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
If the average of 7, 11, 18 and $\large w$ is 17, then 7 + 11 + 18 + $\large w$ = ?
workedSolution
If the average of 7, 11, 18 and $\large w$ is 17 then
>>||| |-|-| |$\dfrac{7 + 11 + 18 + \large w}{4}$|= 17| |7 + 11 + 18 + $\large w$|= 17 $\times$ 4|
>>
$\therefore$ 7 + 11 + 18 + $\large w$ = {{{correctAnswer}}}
correctAnswer
68

Answers

Is Correct?Answer
x

34

x

36

✓

68

x

73

Variant 2

DifficultyLevel

534

Question

If the average of 7, 8, 15 and c\large c is 13, then 7 + 8 + 15 + c\large c = ?

Worked Solution

If the average of 7, 8, 15 and c\large c is 13 then
7+8+15+c4\dfrac{7 + 8 + 15 + \large c }{4} = 13
7 + 8 + 15 + c\large c = 13 ×\times 4


∴\therefore 7 + 8 + 15 + c\large c = 52

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
If the average of 7, 8, 15 and $\large c$ is 13, then 7 + 8 + 15 + $\large c$ = ?
workedSolution
If the average of 7, 8, 15 and $\large c$ is 13 then
>>||| |-|-| |$\dfrac{7 + 8 + 15 + \large c }{4}$|= 13| |7 + 8 + 15 + $\large c$|= 13 $\times$ 4|
>>
$\therefore$ 7 + 8 + 15 + $\large c$ = {{{correctAnswer}}}
correctAnswer
52

Answers

Is Correct?Answer
x

26

x

42

✓

52

x

120

Tags

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