I would earn $51.25 for selling 250 magazines
Base pay is the constant rate paid for the first magazine sold. It is $1.25
Variable pay is the pay that depends on the total magazines sold.
Variable pay = $0.20 x magazines sold
$0.20 x 250 = $50
Total pay = base pay + variable pay
$1.25 + $50 = $51.25
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