To determine the cost of feeding the chicks for 6 weeks, we need to follow a series of steps to calculate the total amount of feed consumed and then find out the total cost based on the price of the feed.
Step-by-Step Explanation
- Calculate the Total Feed Required for 6 Weeks:
- We know that the chicks are fed 0.7 kg of feed per week.
-
To find out how much feed is needed for 6 weeks, we multiply the weekly feed amount by the number of weeks:
[
\text{Total Feed} = \text{Feed per week} \times \text{Number of weeks}
]
[
\text{Total Feed} = 0.7 \, \text{kg/week} \times 6 \, \text{weeks} = 4.2 \, \text{kg}
]
-
Calculate the Cost of the Total Feed:
-
We know that 1 kg of feed costs #5. To find the total cost for 4.2 kg of feed, we multiply the total feed by the cost per kg:
[
\text{Total Cost} = \text{Total Feed} \times \text{Cost per kg}
]
[
\text{Total Cost} = 4.2 \, \text{kg} \times 5 \, \text{#} = 21.00 \, \text{#}
]
-
Final Answer:
- The total cost of feeding the birds for 6 weeks is #21.00.
Explanation of Other Options
- Option A: #4.20
-
This option likely results from misunderstanding the total feed calculation. It seems to represent the cost for just 0.7 kg of feed (0.7 kg × #5 = #3.50), but it does not account for the 6 weeks of feeding.
-
Option B: #11.70
-
This option may arise from calculating the cost for 2.34 kg of feed (which is 0.7 kg for 3 weeks). This is incorrect because we need to consider the full 6 weeks of feeding.
-
Option D: #30.00
- This option could be a miscalculation, possibly assuming a higher feed requirement or cost. It does not align with the correct calculations based on the given data.
Common Pitfalls
- Misunderstanding the Time Frame: Always ensure you multiply the weekly feed amount by the correct number of weeks.
- Incorrect Cost Calculation: Make sure to multiply the total weight of feed by the correct cost per kg.
- Rounding Errors: Be careful with decimal points; ensure you maintain accuracy throughout the calculations.
Revision Summary
- To find the total feed for 6 weeks, multiply the weekly feed by 6.
- Calculate the total cost by multiplying the total feed by the cost per kg.
- The correct total cost for feeding the chicks for 6 weeks is #21.00.
- Always double-check calculations to avoid common errors.