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The average cost of 6 items in a shopping list is Rs.750. If one more item whose cost is Rs.400 is added to the list what will be the new average cost?
- a)725
- b)735
- c)700
- d)600
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The average cost of 6 items in a shopping list is Rs.750. If one more ...
Sum of price of 6 products = 750*6=4500
Sum after 1 more product worth 400 is added
= 4500+400
= 4900
Total number of products now = 6+1 = 7
Required Average = 4900/7 = 700
Sum after 1 more product worth 400 is added
= 4500+400
= 4900
Total number of products now = 6+1 = 7
Required Average = 4900/7 = 700
Most Upvoted Answer
The average cost of 6 items in a shopping list is Rs.750. If one more ...
Understanding the Problem
To find the new average cost after adding one more item to the list, we first need to understand the current average and total costs.
Current Average Cost
- The average cost of 6 items is Rs.750.
- The total cost of these 6 items can be calculated as:
Total Cost = Average Cost × Number of Items
Total Cost = Rs.750 × 6 = Rs.4500
Adding a New Item
- We now add one more item that costs Rs.400.
- The new total cost becomes:
New Total Cost = Original Total Cost + Cost of New Item
New Total Cost = Rs.4500 + Rs.400 = Rs.4900
Calculating the New Average
- With the new total cost of Rs.4900 and now 7 items in total, we calculate the new average:
New Average = New Total Cost / New Number of Items
New Average = Rs.4900 / 7 = Rs.700
Conclusion
The new average cost after adding the item is Rs.700. Therefore, the correct answer is option 'C'.
To find the new average cost after adding one more item to the list, we first need to understand the current average and total costs.
Current Average Cost
- The average cost of 6 items is Rs.750.
- The total cost of these 6 items can be calculated as:
Total Cost = Average Cost × Number of Items
Total Cost = Rs.750 × 6 = Rs.4500
Adding a New Item
- We now add one more item that costs Rs.400.
- The new total cost becomes:
New Total Cost = Original Total Cost + Cost of New Item
New Total Cost = Rs.4500 + Rs.400 = Rs.4900
Calculating the New Average
- With the new total cost of Rs.4900 and now 7 items in total, we calculate the new average:
New Average = New Total Cost / New Number of Items
New Average = Rs.4900 / 7 = Rs.700
Conclusion
The new average cost after adding the item is Rs.700. Therefore, the correct answer is option 'C'.
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The average cost of 6 items in a shopping list is Rs.750. If one more item whose cost is Rs.400 is added to the list what will be the new average cost?a)725b)735c)700d)600Correct answer is option 'C'. Can you explain this answer?
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