Answered

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MP Persevere with Problems Suppose 20
out of 140 people said they play tennis and
1 out of every 9 of those players have a
tennis coach. Using these same ratios, in a
group of 504 people, predict how many
you would expect to have a tennis coach.
Explain how you made the prediction.

Sagot :

sqdancefan

9514 1404 393

Answer:

  8 people

Step-by-step explanation:

If 20 of 140 people play tennis, then in a group of 504 people, we expect ...

  (20/140) × 504 = 72 . . . . tennis players

If 1 of 9 tennis players has a coach, then in a group of 72 tennis players, we expect ...

  (1/9) × 72 = 8 . . . . have a coach

We expect 8 of the 504 people have a tennis coach. We made this prediction by applying the given rates to the larger group.

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