We have been learning about ratios.
To solve ratios you need to figure out how many of each thing there are. Then you have to simplify it by finding the greatest common factor.
Here are some examples.
Picture
|
Ratio
|
Simplified Ratio
|
 |
15:6
|
Cannot be simplified
|
 |
2:12
|
1:6
|
 |
5:9
| |
 |
8:5
| |
 |
12:8
|
3:2
|
 |
15:4
| |
 |
5:11
| |
 |
12:2
|
6:1
|
 |
4:11
| |
 |
11:6
| |
 |
12:9
| |
 |
11:2
|
Picture
|
Ratio
|
Simplified Ratio
|
|
15:6
|
Cannot be simplified
|
|
2:12
|
1:6
|
|
5:9
| |
|
8:5
| |
|
12:8
|
3:2
|
|
15:4
| |
|
5:11
| |
|
12:2
|
6:1
|
|
4:11
| |
|
11:6
| |
|
12:9
| |
|
11:2
|
Picture
|
Ratio
|
Simplified Ratio
|
 |
15:7
|
Cannot be simplified
|
 |
6:6
|
1:1
|
 |
6:9
|
2:3
|
 |
4:15
| |
 |
11:7
| |
 |
3:12
|
1:3
|
 |
2:10
|
1:5
|
 |
14:3
| |
 |
4:12
|
1:3
|
 |
4:3
| |
 |
8:3
| |
 |
13:14
|
Now try these word problems
Question
|
Answer
|
At the store the ratio of books sold to movies sold was 3:6. For every _____ books sold there were _____ movies sold.
|
1:2
|
A pencil company used 60 grams of rubber to make 10 pencils, which is a ratio of 6 grams per pencil
|
6:1
|
An industrial machine is able to make 9 pens in 3 seconds. What is the ratio made per second?
|
3:1
|
Oliver earned $12 for mowing 3 lawns. What is the ratio earned per lawn mowed?
|
4:1
|
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