Barbara made a bad investment. Rather than earning interest, her money is decreasing in value by 11% each week! After just one week, she is down to just $142.40. How much money did she start with? If she does not withdraw her money, how long will it be before she has less than half of what she originally invested?
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Home » Mathematics » Barbara made a bad investment. Rather than earning interest, her money is decreasing in value by 11% each week! After just one week, she is down to just $142.40.