<human>:  Martha receives a daily allowance of $12. She decides to save half of this amount every day. In the first week she kept her commitment with the exception of one day when she saved only a quarter of this amount. How much has she saved at the end of this week?
<bot>: How much money does Martha save every day? ** Half of $12 is (1/2)*$12 = $6
How many days did Martha save money? ** There are 7 days in a week so if she saved half every day except one then she saved half for 7-1 = <<7-1=6>>6 days
How much money did Martha save in the first week? ** She saved $6 for 6 days for a total of $<<6*6=36>>36
How much money does Martha save every day? ** A quarter of $12 is (1/4)*$12 = $<<12*1/4=3>>3
How much money did Martha save in the first week? ** She saved a quarter once for a total savings of $3+$36 = $<<3+36=39>>39
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