6th Grade Math Textbook, Progress

Find the Rate

12-4

Of 125 baseball players named most valuable

players, 24 were also batting champions. What

percent (or rate) of the 125 baseball players

were also batting champions?

To find the percent (or rate), find 24 out of 125.

First estimate: 25 out of 125 


1

2

2

5

5


^1

5

or 20%.

Then use one of these two methods to find the percent, or rate,

r, that one number is of another.

Method 1

 Use the formula rb
p

and solve for r.

0.192


 Rename the fraction as a decimal. 125 
 2  4 .0 0  0 

 Rename the decimal as a percent. 19.2%
r

Method 2

 Write a proportion.

 Solve the proportion.

So 19.2% were batting champions.

Study this example.

What percent of 8 is 20?

^2

8

(^0) 
r r
2.5
250%
Check: 250% 8
2.50 8
20
Think
19.2% is close to the estimate of 20%.
Think
20 is greater than 8.
The percent is greater than 100%.
part  part
1
2
2
4
5


1
n
00

whole whole
24  100
125 n
2400  125
125 n 125
19.2
n

1
n
00


19.2%
19.2
100
0% 100%
players
0 24 125
batting champs
rb
p
r

1
2
2
4
5

r
p

b
2.2
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