Understanding Percentages and Proportional Relationships

If a store buys a guitar for $45 and marks it up by 30%, what will be the selling price?

• $57.50

• $58.50

• $59.00

• $60.00

A trumpet is sold for $104 after a 30% markup. How much did the store originally pay for it?

• $100

• $90

• $80

• $70

If a clarinet is bought for $75 and sold for $100, did the store mark it up by 30%?

• Cannot be determined

• No, less than 30%

• Yes, exactly 30%

• No, more than 30%

A family spends $49.77 at a restaurant, including a $42 bill. What is the tip amount?

• $6.77

• $7.77

• $9.77

• $8.77

What percentage of the bill is a $7.77 tip on a $42 bill?

• 17.5%

• 16.5%

• 15.5%

• 18.5%

The price of gold increased from $513 to $1060 over ten years. By what percentage did it increase?

• 107%

• 100%

• 97%

• 110%

If 950 steps equal 1 kilometer, is there a proportional relationship if 950 steps equal 2852 meters?

• Depends on the context

• Yes, it's proportional

• Cannot be determined

• No, it's not proportional

Noah picked 3 kg of cherries, and My picked half as many. How many kilograms did they pick together?

• 3.5 kg

• 5 kg

• 4.5 kg

• 4 kg

Which expression correctly represents the total cherries picked by Noah and My?

• 3 - 1/2

• 1 + 1/2 * 3

• 3 + 1/2

• 1 + 1/2 * 3

If 1.5 times 3 equals 4.5, which expression is equivalent?

• 3 + 1/2

• 3 - 1/2

• 1 + 1/2 * 3

• 1 + 1/2