20220

Question

{{{question}}}

Worked Solution

{{{workedSolution}}}

Variant 0

DifficultyLevel

580

Question

Jake bought a mobile phone at 25% off the original price.

The original price was $380.

How much did Jake pay for the mobile phone?

Worked Solution

Strategy 1:
Price of mobile = 380−(25%×380)380 - (25\% \times 380)
= 380−95380 - 95
= $285

Strategy 2:
Price of mobile = (100%−25%)×380100\% - 25\% )\times 380
= 75%×38075\% \times 380
= $285

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Jake bought a mobile phone at 25\% off the original price. The original price was \$380. How much did Jake pay for the mobile phone?
workedSolution
sm_nogap Strategy 1:
| | | | --------------- | ---------------------------- | | Price of mobile | = $380 - (25\% \times 380)$ | | | = $380 - 95$ | | | = {{{correctAnswer}}} | sm_nogap Strategy 2: | | | | --------------- | ---------------------------- | | Price of mobile | = ($100\% - 25\% )\times 380$| | | = $75\% \times 380$ | | | = {{{correctAnswer}}} |
correctAnswer
\$285

Answers

Is Correct?Answer
x

$95

✓

$285

x

$342

x

$355

Variant 1

DifficultyLevel

581

Question

George bought a smart watch at 20% off the original price.

The original price was $450.

How much did George pay for the smart watch?

Worked Solution

Strategy 1:
Price of smart watch = 450−(20%×450)450 - (20\% \times 450)
= 450−90450 - 90
= $360

Strategy 2:
Price of smart watch = (100%−20%)×450100\% - 20\% )\times 450
= 80%×45080\% \times 450
= $360

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
George bought a smart watch at 20% off the original price. The original price was $450. How much did George pay for the smart watch?
workedSolution
sm_nogap Strategy 1:
| | | | --------------- | ---------------------------- | | Price of smart watch| = $450 - (20\% \times 450)$ | | | = $450 - 90$ | | | = {{{correctAnswer}}} | sm_nogap Strategy 2: | | | | --------------- | ---------------------------- | | Price of smart watch | = ($100\% - 20\% )\times 450$| | | = $80\% \times 450$ | | | = {{{correctAnswer}}} |
correctAnswer
\$360

Answers

Is Correct?Answer
x

$430

x

$405

✓

$360

x

$90

Variant 2

DifficultyLevel

579

Question

Yves bought a sewing machine at 35% off the original price.

The original price was $2500.

How much did Yves pay for the sewing machine?

Worked Solution

Strategy 1:
Price of sewing machine = 2500−(35%×2500)2500 - (35\% \times 2500)
= 2500−8752500 - 875
= $1625

Strategy 2:
Price of sewing machine = (100%−35%)×2500100\% - 35\% )\times 2500
= 65%×250065\% \times 2500
= $1625

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Yves bought a sewing machine at 35% off the original price. The original price was $2500. How much did Yves pay for the sewing machine?
workedSolution
sm_nogap Strategy 1:
| | | | --------------- | ---------------------------- | | Price of sewing machine| = $2500 - (35\% \times 2500)$ | | | = $2500 - 875$ | | | = {{{correctAnswer}}} | sm_nogap Strategy 2: | | | | --------------- | ---------------------------- | | Price of sewing machine | = ($100\% - 35\% )\times 2500$ | | | = $65\% \times 2500$ | | | = {{{correctAnswer}}} |
correctAnswer
\$1625

Answers

Is Correct?Answer
x

$875

✓

$1625

x

$2465

x

$3375

Variant 3

DifficultyLevel

578

Question

Indira bought a new car at 15% off the original price.

The original price was $52 000.

How much did Indira pay for the new car?

Worked Solution

Strategy 1:
Price of new car = 52 000−(15%×52 000)52\ 000 - (15\% \times 52\ 000)
= 52 000−7 80052\ 000 - 7\ 800
= $44 200

Strategy 2:
Price of new car = (100%−15%)×52 000100\% - 15\% )\times 52\ 000
= 85%×52 00085\% \times 52\ 000
= $44 200

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Indira bought a new car at 15% off the original price. The original price was $52 000. How much did Indira pay for the new car?
workedSolution
sm_nogap Strategy 1:
| | | | --------------- | ---------------------------- | | Price of new car | = $52\ 000 - (15\% \times 52\ 000)$ | | | = $52\ 000 - 7\ 800$ | | | = {{{correctAnswer}}} | sm_nogap Strategy 2: | | | | --------------- | ---------------------------- | | Price of new car | = ($100\% - 15\% )\times 52\ 000$ | | | = $85\% \times 52\ 000$ | | | = {{{correctAnswer}}} |
correctAnswer
\$44 200

Answers

Is Correct?Answer
✓

$44 200

x

$34 667

x

$37 000

x

$26 000

Variant 4

DifficultyLevel

576

Question

Billy bought a new saddle for his horse at 60% off the original price.

The original price was $995.

How much did Billy pay for the saddle?

Worked Solution

Strategy 1:
Price of saddle = 995−(60%×995)995 - (60\% \times 995)
= 995−597995 - 597
= $398

Strategy 2:
Price of saddle = (100%−60%)×995100\% - 60\% )\times 995
= 40%×99540\% \times 995
= $398

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Billy bought a new saddle for his horse at 60% off the original price. The original price was $995. How much did Billy pay for the saddle?
workedSolution
sm_nogap Strategy 1:
| | | | --------------- | ---------------------------- | | Price of saddle | = $995 - (60\% \times 995)$ | | | = $995 - 597$ | | | = {{{correctAnswer}}} | sm_nogap Strategy 2: | | | | --------------- | ---------------------------- | | Price of saddle | = ($100\% - 60\% )\times 995$ | | | = $40\% \times 995$ | | | = {{{correctAnswer}}} |
correctAnswer
\$398

Answers

Is Correct?Answer
✓

$398

x

$597

x

$895.50

x

$935

Variant 5

DifficultyLevel

573

Question

Prue bought a painting at 70% off the original price.

The original price was $2680.

How much did Prue pay for the painting?

Worked Solution

Strategy 1:
Price of painting = 2680−(70%×2680)2680 - (70\% \times 2680)
= 2680−18762680 - 1876
= $804

Strategy 2:
Price of painting = (100%−70%)×2680100\% - 70\% )\times 2680
= 30%×268030\% \times 2680
= $804

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Prue bought a painting at 70% off the original price. The original price was $2680. How much did Prue pay for the painting?
workedSolution
sm_nogap Strategy 1:
| | | | --------------- | ---------------------------- | | Price of painting | = $2680 - (70\% \times 2680)$ | | | = $2680 - 1876$ | | | = {{{correctAnswer}}} | sm_nogap Strategy 2: | | | | --------------- | ---------------------------- | | Price of painting | = ($100\% - 70\% )\times 2680$ | | | = $30\% \times 2680$ | | | = {{{correctAnswer}}} |
correctAnswer
\$804

Answers

Is Correct?Answer
✓

$804

x

$1876

x

$2412

x

$2610

Tags

  • ms_ca