TSI Percent and Proportions

Front

What is the formula to calculate percent decrease?

Back

Percent Decrease = ((Original Price - New Price) / Original Price) * 100

Front

If a car originally cost $20,000 and is now selling for $16,000, what is the percent decrease in price?

Back

20%

Front

What is the formula to find a percentage of a number?

Back

Percentage = (Part / Whole) * 100

Front

5% of what number is 10?

Back

200

Front

What does a ratio represent in mathematics?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

In a ratio of 3:5, if there are 20 blue fish, how many red fish are there?

Back

12

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

If you earn $15 every 3 weeks, how much will you earn in 5 weeks?

Back

$25

Front

What is the formula to calculate the total earnings based on a rate and time?

Back

Total Earnings = (Earnings per time period) * (Number of time periods)

Front

If Jose swims 3 laps in 2 minutes, how long would it take him to swim 27 laps?

Back

18 minutes