Lesson Example Discussion Quiz: Class Homework |
Step-2 |
Title: Proportion |
Grade: 8-a Lesson: S4-L6 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Solving the Proportion \$3:12\$::\$5:x\$. |
|
2 |
Step |
Given Proportion |
\$3:12\$::\$5:x\$ |
3 |
Step |
First, convert the provided proportion into a fraction |
\$3/12\$ = \$5/x\$ |
4 |
Step |
To solve the proportion, begin by cross-multiplying |
\$3 \times x\$ = \$12 \times 5\$ ⇒ \$3x = 60\$ |
5 |
Step |
Divide both sides by the number connected to the variable |
\$(3x)/3 = 60/3\$ |
6 |
Step |
The value of x is: |
\$ x\$ = \$60/3\$ = \$20\$ |
7 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
8 |
Choice.A |
It is correct because it satisfies the proportion equation |
20 |
9 |
Choice.B |
This answer is incorrect because we calculated x to be 20, not 21 |
21 |
10 |
Choice.C |
This answer is incorrect because we calculated x to be 20, not 22 |
22 |
11 |
Choice.D |
This answer is incorrect because we calculated x to be 20, not 23 |
23 |
12 |
Answer |
Option |
A |
13 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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