Number, NAPX-p110751v02 SA

Question

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Worked Solution

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Variant 0

DifficultyLevel

683

Question

In a bulk food supermarket, a kilogram of pepper costs $14.

Nancy bought 2.65 kilograms of pepper for her restaurant.

How much did Nancy pay for the pepper?

Worked Solution

Cost of 1 kg = $14

Cost of 2 kg = 2 × 14 = $28

Cost of 0.1 kg = 0.1 × $14 = $1.40
Cost of 0.65 kg = 6 × 1.4 + 0.70
= $9.10

∴\therefore Cost of 2.65 kg = 28 + 9.1
= $37.10

Question Type

Answer Box

Variables

Variable nameVariable value
question
In a bulk food supermarket, a kilogram of pepper costs $14. Nancy bought 2.65 kilograms of pepper for her restaurant. How much did Nancy pay for the pepper?
workedSolution
Cost of 1 kg = $14 Cost of 2 kg = 2 × 14 = $28 Cost of 0.1 kg = 0.1 × $14 = $1.40
||| |-|-| |Cost of 0.65 kg|= 6 × 1.4 + 0.70| ||= $9.10|

||| |-|-| |$\therefore$ Cost of 2.65 kg|= 28 + 9.1| ||= {{{prefix0}}}{{{correctAnswer0}}}|
correctAnswer0
37.10
prefix0
$
suffix0

Answers

Specify one or more 'ANSWER' block(s) as exampled below.
Note: correctAnswer is required, the rest are optional. ("correctAnswer" is what the student would need to type in to the box to get the answer correct.)

For example:
correctAnswer: 123.40

And optionally, specify the following, but only if you need something different to the defaults: 'width' defaults to 5 if not present, and valid values are 3 to 10; 'prefix' and 'suffix' default to nothing if not present.
prefix: $
suffix: mm$^2$
width: 5

correctAnswerNcorrectAnswerValueAnswer
correctAnswer037.10

$

Variant 1

DifficultyLevel

683

Question

A kilogram of apples cost $8.

Danica bought 6.35 kilograms of apples.

How much did Danica pay for the apples?

Worked Solution

Cost of 1 kg = $8

Cost of 6 kg = 6 × 8 = $48

Cost of 0.1 kg = 0.1 × 8 = $0.80
Cost of 0.35 kg = 3 × 0.8 + 0.4
= $2.80

∴\therefore Cost of 6.35 kg = 48 + 2.80
= $50.80

Question Type

Answer Box

Variables

Variable nameVariable value
question
A kilogram of apples cost $8. Danica bought 6.35 kilograms of apples. How much did Danica pay for the apples?
workedSolution
Cost of 1 kg = $8 Cost of 6 kg = 6 × 8 = $48 Cost of 0.1 kg = 0.1 × 8 = $0.80
||| |-|-| |Cost of 0.35 kg|= 3 × 0.8 + 0.4| ||= $2.80|

||| |-|-| |$\therefore$ Cost of 6.35 kg|= 48 + 2.80| ||= {{{prefix0}}}{{{correctAnswer0}}}|
correctAnswer0
50.80
prefix0
$
suffix0

Answers

Specify one or more 'ANSWER' block(s) as exampled below.
Note: correctAnswer is required, the rest are optional. ("correctAnswer" is what the student would need to type in to the box to get the answer correct.)

For example:
correctAnswer: 123.40

And optionally, specify the following, but only if you need something different to the defaults: 'width' defaults to 5 if not present, and valid values are 3 to 10; 'prefix' and 'suffix' default to nothing if not present.
prefix: $
suffix: mm$^2$
width: 5

correctAnswerNcorrectAnswerValueAnswer
correctAnswer050.80

$

Variant 2

DifficultyLevel

683

Question

Bananas cost $5 per kilogram.

Magilla buys 5.45 kilograms of bananas.

How much does Magilla pay for the bananas?

Worked Solution

Cost of 5 kg = 5 × $5 = $25

Cost of 0.1 kg = 0.1 × $5 =50 cents
⇒\rArr Cost of 0.45 kg = 4.5 × 50 cents
= $2.25

∴\therefore Cost of 5.45 kg = 25 + 2.25
= $27.25

Question Type

Answer Box

Variables

Variable nameVariable value
question
Bananas cost $5 per kilogram. Magilla buys 5.45 kilograms of bananas. How much does Magilla pay for the bananas?
workedSolution
Cost of 5 kg = 5 × $5 = $25 Cost of 0.1 kg = 0.1 × $5 =50 cents
||| |-|-| |$\rArr$ Cost of 0.45 kg|= 4.5 × 50 cents| ||= $2.25|

||| |-|-| |$\therefore$ Cost of 5.45 kg|= 25 + 2.25| ||= {{{prefix0}}}{{{correctAnswer0}}}|
correctAnswer0
27.25
prefix0
$
suffix0

Answers

Specify one or more 'ANSWER' block(s) as exampled below.
Note: correctAnswer is required, the rest are optional. ("correctAnswer" is what the student would need to type in to the box to get the answer correct.)

For example:
correctAnswer: 123.40

And optionally, specify the following, but only if you need something different to the defaults: 'width' defaults to 5 if not present, and valid values are 3 to 10; 'prefix' and 'suffix' default to nothing if not present.
prefix: $
suffix: mm$^2$
width: 5

correctAnswerNcorrectAnswerValueAnswer
correctAnswer027.25

$

Tags

  • nap_nc