John has a profit of $150 in the month of October. The profit was at least $12 more than the previous month. Determine the maximum profit he made in the month of September.
A
$135
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B
$138
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C
$136
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D
$137
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Solution
The correct option is B$138 Profit made in the month of October =$150
Let profit made in month of September be x.
Given,
Profit made in the month of October is at least 12 more than the profit made in month of September. 150≥x+12
Subtract 12 from both the sides. 150−12≥x+12−12
138≥x which is also written as x≤138.
The maximum profit in september is $138.
A closed circle at 138 and the red line goes to the left, indicating that x is less than or equal to 138.