12/9 - Percent Word Problem and Ratio Representation

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 30% of 200, calculate 200 x 0.30 = 60.

Front

What does it mean to find a tip as a percentage?

Back

Finding a tip as a percentage means calculating a portion of the total bill based on a percentage rate, such as 15% of the total amount.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100. For example, 1/4 = (1 ÷ 4) x 100 = 25%.

Front

What is the formula for calculating total cost including tip?

Back

Total Cost = Bill Amount + (Tip Percentage x Bill Amount). For example, if the bill is $58.65 and the tip is 15%, Total Cost = $58.65 + (0.15 x $58.65).

Front

If you earn $15 every 3 weeks, how much do you earn in 1 week?

Back

To find the weekly earnings, divide the total earnings by the number of weeks: $15 ÷ 3 = $5 per week.

Front

What is the relationship between hours worked and earnings in a graph?

Back

In a graph showing hours worked versus earnings, the slope represents the rate of pay per hour. A steeper slope indicates higher earnings per hour.

Front

How do you find the total amount spent if you know the percentage spent?

Back

To find the total amount spent, multiply the total earnings by the percentage spent (in decimal form). For example, if Sarah earns $20 and spends 30%, she spends $20 x 0.30 = $6.

Front

What does it mean to represent a situation with a graph?

Back

Representing a situation with a graph means visually displaying data or relationships between variables, such as earnings over time or spending habits.

Front

How do you determine the amount earned over a specific period?

Back

To determine the amount earned over a specific period, multiply the earnings per time unit by the number of time units. For example, if you earn $5 per week for 5 weeks, you earn $5 x 5 = $25.