Question

Ed is doing a survey of popular colors for cars for a school report. He decides to take a sample by sitting near a busy intersection and noting the colors of the cars as they go by him. Ed counts 23 black cars, 9 red cars, 17 blue cars, 25 white cars and 21 silver cars during 20 minutes of watching. How many more white and blue cars are there than silver and red cars?

Answer 1

There are 12 more of white and blue cars than silver and red cars

Step-by-step explanation:

Step 1 :

Number of black cars counted by Ed = 23

Number of red cars counted by Ed = 9

Number of blue cars counted by Ed = 17

Number of white cars counted by Ed = 25

Number of silver cars counted by Ed = 21

We need to determine how many more white and blue cars are there than silver and red cars

Step 2  :

Total of white and blue cars = 25 + 17 = 42 cars

Total of sliver and red cars = 21 + 9 = 30 cars

Difference  = 42 - 30 = 12 cars

Hence there are 12 more of white and blue cars than silver and red cars

Step 3 :

Answer :

There are 12 more of blue and white cars than red and silver cars