7th 3-2 Connect Percent and Proportion

Front

What is the formula to calculate the percentage of a part compared to the whole?

Back

Percentage = (Part / Whole) × 100

Front

If a down payment of $60,000 is made on a $240,000 apartment, what percent is the down payment of the total price?

Back

25%

Front

What does it mean for a relationship to be proportional?

Back

A relationship is proportional if it can be expressed as y = kx, where k is a constant.

Front

Write the equation that represents the relationship between the number of guests (x) and the pounds of chicken (y) if Mrs. Crawford makes 2 lb plus 1 lb for each guest.

Back

y = 1x + 2

Front

Is the relationship y = 1x + 2 proportional?

Back

No, it is not proportional because it has a constant added (2).

Front

In the statement 'The 14 compact cars sold by a dealer on Monday was 56% of the cars sold that day', what is the 'whole'?

Back

The whole is the total number of cars sold that day.

Front

How do you find the amount of a substance in a solution given the percentage and total volume?

Back

Amount = (Percentage / 100) × Total Volume

Front

If Mei has 60 milliliters of a solution that is 35% nitric acid, how much nitric acid is in the solution?

Back

21 milliliters

Front

What is the relationship between distance, speed, and time?

Back

Distance = Speed × Time

Front

If Kevin's car can go 400 miles on one tank and he used 30% of the tank to travel to the stadium, how far did he travel?

Back

120 miles (30% of 400 miles).