SOLUTION: The total cost of producing a group of bags is $1100. In addition, each bag cost $18 in materials. If the bags are sold for $40, how many bags need to sold to gain a profit of at l

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Question 401979: The total cost of producing a group of bags is $1100. In addition, each bag cost $18 in materials. If the bags are sold for $40, how many bags need to sold to gain a profit of at least $2200?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Profit = income - cost
Let b = number of bags sold
2200+=+40b+-+%281100+%2B+18b%29
2200+=+40b+-+1100+-+18b
22b+=+3300
b+=+50
150 bags must be sold
check:
what if 149 bags are sold?
P+=+40b+-+%281100+%2B+18b%29
P+=+40%2A149+-+%281100+%2B+18%2A149%29
P+=+5960+-+1100+-+2682
P+=+2178
OK