Total Electricity bill amount - SAR 500.63 shared between 6 members for the number of days lived accordingly.

The cost per day is divided as per the members lived together, not together as a whole for month. Divide and Calculate Proportional share amount for Each member of a house in a table format with below details for Electricity bill of 31 days. 

First determine the number of people living together each day and then distribute the daily cost accordingly.

NUMBER OF days where each member lived:
For the first 9 days [01-09], 4 members lived together. (Ali, Jalal, Sabari, Irfan)
For the next 2 days (10-11), 3 members lived together. (Jalal, Sabari, Irfan)
For the next 10 days (12-21), 4 members lived together. (Mujeeb, Jalal, Sabari, Irfan)
For the next 10 days (22-31), 5 members lived together. (Famsic, Mujeeb, Jalal, Sabari, Irfan)

Ali - 9 Days [From 01-9th]
Famsic - 10 Days [From 22-31st] 
Mujeeb - 20 Days [From 01-12th]
Jalal - 31 Days [From 01-31st]
Sabari - 31 Days [From 01-31st]
Irfan - 31 Days [From 01-31st]


To calculate the proportional share of each member based on the number of days they lived in the house and the group size for each day, we need to first break the total bill into daily costs and then divide that cost based on the number of people who lived together each day.

### Step-by-step approach:

1. **Total Bill**: SAR 500.63 for 31 days
2. **Daily Cost**:  
   \( \text{Daily cost} = \frac{500.63}{31} = 16.15 \text{ SAR per day} \)

3. **Groupings**:
   - **Days 1–9**: 4 members (Ali, Jalal, Sabari, Irfan) lived together.
   - **Days 10–11**: 3 members (Jalal, Sabari, Irfan) lived together.
   - **Days 12–21**: 4 members (Mujeeb, Jalal, Sabari, Irfan) lived together.
   - **Days 22–31**: 5 members (Famsic, Mujeeb, Jalal, Sabari, Irfan) lived together.

4. **Calculate each member’s share for each period**:
   - For days when **4 members** lived together, each member pays \( \frac{16.15}{4} = 4.04 \) SAR per day.
   - For days when **3 members** lived together, each member pays \( \frac{16.15}{3} = 5.38 \) SAR per day.
   - For days when **5 members** lived together, each member pays \( \frac{16.15}{5} = 3.23 \) SAR per day.

Now we can distribute the daily cost based on the number of days each member lived in the house.

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### Electricity Bill Share for Each Member:

| **Member** | **Days Lived** | **Daily Cost (SAR)** | **Total Share (SAR)** |
|------------|----------------|----------------------|-----------------------|
| **Ali**    | 9 days (4 members) | \( 9 \times 4.04 \)  | **36.36** |
| **Famsic** | 10 days (5 members) | \( 10 \times 3.23 \) | **32.30** |
| **Mujeeb** | 10 days (4 members) + 10 days (5 members) | \( 10 \times 4.04 + 10 \times 3.23 \) | **40.40 + 32.30 = 72.70** |
| **Jalal**  | 9 days (4 members) + 2 days (3 members) + 10 days (4 members) + 10 days (5 members) | \( 9 \times 4.04 + 2 \times 5.38 + 10 \times 4.04 + 10 \times 3.23 \) | **36.36 + 10.76 + 40.40 + 32.30 = 119.82** |
| **Sabari** | Same as Jalal | Same as Jalal | **119.82** |
| **Irfan**  | Same as Jalal | Same as Jalal | **119.82** |

---

### Final Summary:

- **Ali**: SAR 36.36
- **Famsic**: SAR 32.30
- **Mujeeb**: SAR 72.70
- **Jalal**: SAR 119.82
- **Sabari**: SAR 119.82
- **Irfan**: SAR 119.82

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Do you need further details or have any questions?  

Here are 5 related questions you might find helpful:

1. How do we adjust the formula if more or fewer people join on certain days?
2. What if there were different electricity rates for different days?
3. How would the calculation change if someone used more electricity than others?
4. Can we calculate shares if we know how much each person used individually?
5. How can we handle partial day living?

**Tip**: Always track the number of people for each day to avoid over/undercharging members.

Total Electricity bill amount - SAR 500.63 shared between 6 members for the number of days lived accordingly. The cost per day is divided as per the members lived together, not together as a whole for month. Divide and Calculate Proportional share amount for Each member of a house in a table format with below details for Electricity bill of 31 days.

Learn how to calculate the proportional share of an electricity bill of SAR 500.63 for 6 members living together on different days. This step-by-step guide demonstrates how to divide the bill based on daily costs and group sizes over a period of 31 days. Suitable for students in Grades 8-10.

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