MATH
Percentages.pdf

# A 200 of 50 b 50 of 200 4 b they are the same a 240

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A: 200% of 50 B: 50% of 200 4 B They are the same A 240 200 S1. How many minutes are there in 50% of a third of the entire day? 360 280 While it’s possible to convert to minutes first, it’s easiest to start in hours: 24 hours. " # of 24 is 8. 50% of 8 is 4. 4(60)=240 minutes. 200% of 50 = 100 because finding 200% of something indicates doubling it. 50% of 200 = 100 because finding 50% of something indicates halving it.

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SKILL PRACTICE SOLUTIONS S3. If a positive number is doubled, its value increases by which percent? 200% 100% 50% S4. Is this statement true or false? Mike can find 3% of any number by finding 1% of the number and multiplying that value by 3. 4 False True When we double a positive number, we are increasing it by the amount of the original number. Given that a number is 100% of itself, we are increasing the number by 100%. An increase of 100% indicates a final value of 200%: 100% of the original amount plus 100% of the original amount. The answer of 200% is tempting since calculating an increase of 100% can be done by multiplying by 200%. 1% + 1% + 1% = 3% of a number.
CHALLENGE QUESTIONS SOLUTIONS C2. The number of people owning memberships at a gym increased by 20% to 60. How many members did the gym have before the increase? C1. When you freeze a full bottle of water, the bottle will become swollen. This is because water expands its volume by approximately 10% when frozen. If you freeze 30L of liquid water, what will be its frozen volume in liters?

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• Summer '18
• Meghan Craft
• Algebra, Elementary arithmetic, increase

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