A painter paints n number of paintings each month from March to June. He has sold n/2 number of paintings at the beginning of each month from July to February. He hasn't paid extra charges for storage from March through June, but he paid $ 0.10 per painting each month from July to February for the unsold paintings. What was the total additional cost (in terms of n) for storage that the painter had to pay for the 12 months from March to February?
Options:
1.4n
1.6n
1.2n
1.1n
Answers
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Answer: 1.4n
Explanation:
cost for July = 3.5n * 0.1 = 0.35n
cost for August = 0.30n
cost for September= 0.25n
cost for October= 0.20n
cost for November=0.15n
cost for December= 0.1n
cost for January= 0.5n
cost for February= 0
therefore, total cost= 1.4n
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