Algebra, NAP_70031

Question

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Worked Solution

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Variant 0

DifficultyLevel

520

Question

If the average of 15, 22, 39 and y\large y is 27, then 15 + 22 + 39 + y\large y = ?

Worked Solution

If the average of 15, 22, 39 and y\large y is 27 then
15+22+39+y4\dfrac{15 + 22 + 39 + \large y }{4} = 27
15 + 22 + 39 + y\large y = 27 ×\times 4

∴\therefore 15 + 22 + 39 + y\large y = 108

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
If the average of 15, 22, 39 and $\large y$ is 27, then 15 + 22 + 39 + $\large y$ = ?
workedSolution
If the average of 15, 22, 39 and $\large y$ is 27 then
>||| |-|-| |$\dfrac{15 + 22 + 39 + \large y }{4}$|= 27| |15 + 22 + 39 + $\large y$| = 27 $\times$ 4|

>>$\therefore$ 15 + 22 + 39 + $\large y$ = {{{correctAnswer}}}
correctAnswer
108

Answers

Is Correct?Answer
x

27

x

81

x

103

✓

108

Variant 1

DifficultyLevel

522

Question

If the average of 11, 14, 17 and t\large t is 15, then 11 + 14 + 17 + t\large t = ?

Worked Solution

If the average of 11, 14, 17 and t\large t is 15 then
11+14+17+t4\dfrac{11 + 14 + 17 + \large t }{4} = 15
11 + 14 + 17 + t\large t = 15 ×\times 4

∴\therefore 11 + 14 + 17 + t\large t = 60

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
If the average of 11, 14, 17 and $\large t$ is 15, then 11 + 14 + 17 + $\large t$ = ?
workedSolution
If the average of 11, 14, 17 and $\large t$ is 15 then
>||| |-|-| |$\dfrac{11 + 14 + 17 + \large t }{4}$|= 15| |11 + 14 + 17 + $\large t$| = 15 $\times$ 4|

>>$\therefore$ 11 + 14 + 17 + $\large t$ = {{{correctAnswer}}}
correctAnswer
60

Answers

Is Correct?Answer
x

72

✓

60

x

42

x

30

Variant 2

DifficultyLevel

524

Question

If the average of 21, 24, 31 and m\large m is 25, then 21 + 24 + 31 + m\large m = ?

Worked Solution

If the average of 21, 24, 31 and m\large m is 25 then
21+24+31+m4\dfrac{21 + 24 + 31 + \large m }{4} = 25
21 + 24 + 31 + m\large m = 25 ×\times 4

∴\therefore 21 + 24 + 31 + m\large m = 100

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
If the average of 21, 24, 31 and $\large m$ is 25, then 21 + 24 + 31 + $\large m$ = ?
workedSolution
If the average of 21, 24, 31 and $\large m$ is 25 then
>||| |-|-| |$\dfrac{21 + 24 + 31 + \large m }{4}$|= 25| |21 + 24 + 31 + $\large m$| = 25 $\times$ 4|

>>$\therefore$ 21 + 24 + 31 + $\large m$ = {{{correctAnswer}}}
correctAnswer
100

Answers

Is Correct?Answer
✓

100

x

76

x

50

x

24

Tags

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