Question
What is the average cost per pencil if 300 out of 500 pencil cost 5 Naira each and the rest cost 4 Naira 40 kobo each
Answers
GPT-4o mini
To calculate the average cost per pencil, we first need to find the total cost of all the pencils and then divide that by the total number of pencils.
1. **Cost of the first 300 pencils**:
- Each costs 5 Naira.
- Total cost for 300 pencils = 300 × 5 = 1500 Naira.
2. **Cost of the remaining 200 pencils (500 - 300)**:
- Each costs 4 Naira 40 kobo.
- Since 1 Naira = 100 kobo, 4 Naira 40 Kobo = 4.40 Naira.
- Total cost for 200 pencils = 200 × 4.40 = 880 Naira.
3. **Total cost of all pencils**:
- Total cost = Cost of first 300 pencils + Cost of remaining 200 pencils
- Total cost = 1500 Naira + 880 Naira = 2380 Naira.
4. **Total number of pencils**:
- Total number of pencils = 500.
5. **Average cost per pencil**:
- Average cost = Total cost / Total number of pencils
- Average cost = 2380 Naira / 500 = 4.76 Naira.
So, the average cost per pencil is **4.76 Naira**.
1. **Cost of the first 300 pencils**:
- Each costs 5 Naira.
- Total cost for 300 pencils = 300 × 5 = 1500 Naira.
2. **Cost of the remaining 200 pencils (500 - 300)**:
- Each costs 4 Naira 40 kobo.
- Since 1 Naira = 100 kobo, 4 Naira 40 Kobo = 4.40 Naira.
- Total cost for 200 pencils = 200 × 4.40 = 880 Naira.
3. **Total cost of all pencils**:
- Total cost = Cost of first 300 pencils + Cost of remaining 200 pencils
- Total cost = 1500 Naira + 880 Naira = 2380 Naira.
4. **Total number of pencils**:
- Total number of pencils = 500.
5. **Average cost per pencil**:
- Average cost = Total cost / Total number of pencils
- Average cost = 2380 Naira / 500 = 4.76 Naira.
So, the average cost per pencil is **4.76 Naira**.