Question

Neil measured a swimming pool and made a scale drawing. He used the scale 7 inches : 5 feet. The diving board is 28 inches long in the drawing. How long is the actual diving board?

Answer 1

20 feet

Explanation:

If every 7 inches equals 5 then we must know how many times 7 goes into 28

28 divided by 7 = 4

Now that we know that there are 4 sevens in 28, we must multiply 4 by 5 because every 7 inches equaled 5.

4 multiplied by 5 = 20

This give us our answer, and tells us that the diving board is 20 feet long

Answer 2

Answer: 20 feet.

Step-by-step explanation: We can use the scale given to convert the length of the diving board from inches to feet.

According to the scale, 7 inches on the drawing represents 5 feet in real life. Therefore, we can set up a proportion:

7 inches : 5 feet = 28 inches : x feet

To solve for x, we can cross-multiply and simplify:

7 inches * x feet = 5 feet * 28 inches

7x = 140

x = 20

So the actual length of the diving board is 20 feet.