Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Ratio & Proportion |
Grade: 1300-a Lesson: S4-L7 |
Explanation: Hello Students, time to learn examples. Let us take turns and read each example. Explain each step. Pay special attention to steps and pictures and communicate in your own words. |
Examples:
If a : b is 3 : 4 and b : c is 2 : 5, what is a : b : c?
Step 1a
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Here a : b = \$3 : 4\$ and b : c = \$2 : 5\$ |
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Explanation: Given ratio one is \$3 : 4\$, and the ratio 2 is \$2 : 5\$. |
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Step 1b
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Just multiply with such a number that the B are same Here a : b is multiplied by 2, i.e., a : b =\$ (3 : 4 ) 2\$ = \$6 : 8\$. |
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Explanation: Here, we can multiply the first ratio by 2 then we get \$6 : 8\$. |
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Step 1c
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Here b : c is multiplied by 4, i.e., a: b = \$(2: 5 ) 4\$ = \$8 : 10\$. |
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Explanation: Here, we can multiply the second ratio by four then we get \$8 : 10\$. |
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Step 1d
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So, the new ratio is a : b : c is \$6 : 8 : 10\$. |
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Explanation: Therefore, the new ratio a : b : c is \$6 : 8 : 10\$. |
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